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BTS Home > Publications > Journal of Transportation and Statistics > Volume 6 Number 2/3 > Paper 1
Printable Version

Figure 4
Trends in the Transportation Output Index

Excel | CSV | Graphic Version

  Orginal series Phase Average Trend HP Trend
1/1/1980 68.2 64.7 64.8
2/1/1980 66.9 64.4 64.6
3/1/1980 64.1 64.1 64.4
4/1/1980 62.8 63.9 64.2
5/1/1980 62.3 63.7 64.1
6/1/1980 60.8 63.5 63.9
7/1/1980 60.4 63.3 63.7
8/1/1980 60.7 63.0 63.5
9/1/1980 61.5 62.8 63.3
10/1/1980 62.8 62.6 63.1
11/1/1980 62.6 62.5 63.0
12/1/1980 65.5 62.4 62.8
1/1/1981 65.2 62.3 62.6
2/1/1981 64.6 62.1 62.5
3/1/1981 63.9 61.9 62.3
4/1/1981 63.3 61.8 62.2
5/1/1981 61.7 61.7 62.1
6/1/1981 62.3 61.7 61.9
7/1/1981 63.2 61.6 61.8
8/1/1981 61.0 61.6 61.7
9/1/1981 62.2 61.3 61.6
10/1/1981 61.7 60.9 61.4
11/1/1981 60.2 60.6 61.3
12/1/1981 60.7 60.2 61.3
1/1/1982 58.0 59.9 61.2
2/1/1982 58.6 59.6 61.1
3/1/1982 59.1 59.3 61.0
4/1/1982 58.5 59.0 61.0
5/1/1982 57.5 58.7 60.9
6/1/1982 59.0 58.5 60.9
7/1/1982 57.2 58.2 60.8
8/1/1982 56.7 57.9 60.8
9/1/1982 56.9 57.7 60.8
10/1/1982 54.8 57.7 60.8
11/1/1982 55.5 57.7 60.8
12/1/1982 57.3 57.8 60.8
1/1/1983 57.2 58.1 60.9
2/1/1983 57.4 58.5 60.9
3/1/1983 58.9 58.8 60.9
4/1/1983 57.3 59.2 61.0
5/1/1983 58.6 59.6 61.1
6/1/1983 61.1 59.9 61.1
7/1/1983 60.9 60.3 61.2
8/1/1983 61.0 60.7 61.3
9/1/1983 61.2 61.0 61.4
10/1/1983 59.7 61.4 61.5
11/1/1983 61.3 61.8 61.6
12/1/1983 61.8 62.2 61.7
1/1/1984 62.7 62.6 61.8
2/1/1984 64.8 62.7 62.0
3/1/1984 64.7 62.8 62.1
4/1/1984 64.2 63.0 62.3
5/1/1984 65.7 63.1 62.4
6/1/1984 65.8 63.3 62.6
7/1/1984 64.0 63.4 62.7
8/1/1984 66.0 63.6 62.9
9/1/1984 63.5 63.8 63.1
10/1/1984 64.4 63.9 63.2
11/1/1984 64.3 64.0 63.4
12/1/1984 63.5 64.1 63.6
1/1/1985 64.0 64.2 63.8
2/1/1985 62.3 64.3 64.0
3/1/1985 62.6 64.5 64.2
4/1/1985 64.2 64.6 64.4
5/1/1985 65.0 64.7 64.6
6/1/1985 62.9 64.8 64.8
7/1/1985 63.4 64.9 65.1
8/1/1985 63.7 65.0 65.3
9/1/1985 62.3 65.2 65.5
10/1/1985 63.5 65.3 65.7
11/1/1985 62.8 65.5 66.0
12/1/1985 65.1 65.7 66.2
1/1/1986 67.0 65.9 66.5
2/1/1986 65.7 66.1 66.7
3/1/1986 65.2 66.3 67.0
4/1/1986 67.0 66.5 67.2
5/1/1986 66.0 66.7 67.5
6/1/1986 65.4 66.9 67.7
7/1/1986 68.9 67.1 68.0
8/1/1986 67.9 67.3 68.2
9/1/1986 68.6 67.5 68.5
10/1/1986 68.7 67.8 68.8
11/1/1986 67.2 68.2 69.0
12/1/1986 70.1 68.6 69.3
1/1/1987 69.9 69.1 69.6
2/1/1987 70.6 69.5 69.8
3/1/1987 71.3 69.9 70.1
4/1/1987 72.2 70.4 70.3
5/1/1987 69.7 70.8 70.6
6/1/1987 71.5 71.3 70.9
7/1/1987 74.4 71.7 71.1
8/1/1987 71.4 72.1 71.4
9/1/1987 74.2 72.6 71.6
10/1/1987 74.2 73.0 71.9
11/1/1987 74.3 73.5 72.1
12/1/1987 76.7 73.7 72.4
1/1/1988 74.8 73.9 72.6
2/1/1988 78.5 74.1 72.8
3/1/1988 76.9 74.4 73.1
4/1/1988 76.4 74.6 73.3
5/1/1988 75.8 74.9 73.5
6/1/1988 77.7 75.1 73.8
7/1/1988 75.5 75.4 74.0
8/1/1988 77.0 75.6 74.2
9/1/1988 78.2 75.9 74.4
10/1/1988 75.7 76.1 74.6
11/1/1988 77.9 76.4 74.8
12/1/1988 79.4 76.7 75.1
1/1/1989 77.1 77.0 75.3
2/1/1989 76.4 77.2 75.5
3/1/1989 76.4 77.5 75.7
4/1/1989 75.0 77.8 75.9
5/1/1989 76.4 78.1 76.1
6/1/1989 77.5 78.4 76.3
7/1/1989 73.8 78.3 76.4
8/1/1989 76.8 78.2 76.6
9/1/1989 77.1 78.2 76.8
10/1/1989 76.1 78.1 77.0
11/1/1989 77.6 78.0 77.2
12/1/1989 77.2 78.0 77.4
1/1/1990 77.8 77.9 77.6
2/1/1990 78.8 77.8 77.8
3/1/1990 79.4 77.8 78.0
4/1/1990 77.9 77.7 78.2
5/1/1990 79.2 77.6 78.4
6/1/1990 78.2 77.5 78.6
7/1/1990 78.2 77.4 78.8
8/1/1990 81.3 77.7 79.0
9/1/1990 79.0 78.0 79.2
10/1/1990 80.8 78.3 79.4
11/1/1990 80.4 78.5 79.6
12/1/1990 76.7 78.8 79.8
1/1/1991 78.5 79.1 80.0
2/1/1991 75.9 79.4 80.2
3/1/1991 73.7 79.6 80.5
4/1/1991 77.3 79.9 80.7
5/1/1991 78.7 80.2 80.9
6/1/1991 75.5 80.5 81.1
7/1/1991 80.8 80.8 81.4
8/1/1991 81.8 81.1 81.6
9/1/1991 82.3 81.4 81.9
10/1/1991 83.9 81.7 82.1
11/1/1991 80.9 82.0 82.4
12/1/1991 80.2 82.3 82.6
1/1/1992 82.6 82.7 82.9
2/1/1992 83.2 83.0 83.2
3/1/1992 82.1 83.4 83.5
4/1/1992 82.4 83.8 83.7
5/1/1992 82.2 84.2 84.0
6/1/1992 83.9 84.6 84.3
7/1/1992 87.9 85.0 84.6
8/1/1992 84.5 85.4 84.9
9/1/1992 86.2 85.8 85.2
10/1/1992 85.7 86.2 85.5
11/1/1992 84.0 86.5 85.8
12/1/1992 85.5 86.9 86.1
1/1/1993 85.3 87.3 86.5
2/1/1993 84.5 87.6 86.8
3/1/1993 85.7 87.9 87.1
4/1/1993 86.8 88.2 87.5
5/1/1993 84.7 88.5 87.8
6/1/1993 86.0 88.8 88.1
7/1/1993 85.9 89.1 88.5
8/1/1993 85.5 89.4 88.8
9/1/1993 89.2 89.7 89.2
10/1/1993 88.7 90.0 89.6
11/1/1993 90.3 90.3 89.9
12/1/1993 89.7 90.6 90.3
1/1/1994 86.7 90.9 90.7
2/1/1994 87.9 91.2 91.0
3/1/1994 93.5 91.5 91.4
4/1/1994 84.5 91.8 91.8
5/1/1994 91.4 92.0 92.2
6/1/1994 93.4 92.3 92.6
7/1/1994 91.7 92.6 92.9
8/1/1994 93.8 92.9 93.3
9/1/1994 97.0 93.2 93.7
10/1/1994 94.4 93.5 94.1
11/1/1994 99.7 93.7 94.5
12/1/1994 104.6 94.2 94.9
1/1/1995 101.4 94.6 95.3
2/1/1995 100.6 95.1 95.7
3/1/1995 100.3 95.5 96.1
4/1/1995 94.4 96.0 96.5
5/1/1995 99.1 96.4 96.9
6/1/1995 98.0 96.9 97.3
7/1/1995 94.2 97.3 97.6
8/1/1995 99.9 97.8 98.0
9/1/1995 99.2 98.2 98.4
10/1/1995 97.1 98.7 98.8
11/1/1995 99.1 99.2 99.2
12/1/1995 95.7 99.6 99.6
1/1/1996 96.9 99.9 100.0
2/1/1996 100.0 100.2 100.4
3/1/1996 99.0 100.5 100.8
4/1/1996 98.6 100.8 101.2
5/1/1996 101.5 101.1 101.6
6/1/1996 97.5 101.3 102.0
7/1/1996 100.0 101.6 102.4
8/1/1996 100.5 101.9 102.8
9/1/1996 99.9 102.2 103.1
10/1/1996 102.9 102.5 103.5
11/1/1996 101.5 102.8 103.9
12/1/1996 101.6 103.1 104.3
1/1/1997 104.5 103.3 104.7
2/1/1997 104.1 103.6 105.1
3/1/1997 103.4 103.9 105.5
4/1/1997 105.0 104.2 105.8
5/1/1997 105.5 104.5 106.2
6/1/1997 103.7 104.7 106.6
7/1/1997 106.4 105.0 107.0
8/1/1997 105.3 105.3 107.3
9/1/1997 109.8 106.0 107.7
10/1/1997 110.6 106.6 108.1
11/1/1997 106.9 107.3 108.4
12/1/1997 110.9 108.0 108.8
1/1/1998 110.3 108.7 109.1
2/1/1998 110.5 109.3 109.4
3/1/1998 112.0 110.0 109.8
4/1/1998 112.7 110.7 110.1
5/1/1998 111.9 111.4 110.4
6/1/1998 113.1 112.0 110.7
7/1/1998 113.2 112.7 111.0
8/1/1998 110.3 113.4 111.3
9/1/1998 112.6 114.1 111.6
10/1/1998 114.0 114.3 111.9
11/1/1998 113.2 114.6 112.1
12/1/1998 114.3 114.8 112.4
1/1/1999 112.4 115.1 112.7
2/1/1999 114.4 115.3 112.9
3/1/1999 119.4 115.6 113.1
4/1/1999 116.3 115.8 113.4
5/1/1999 115.1 116.0 113.6
6/1/1999 116.8 116.2 113.8
7/1/1999 116.1 116.1 114.0
8/1/1999 116.7 116.0 114.2
9/1/1999 119.1 115.8 114.4
10/1/1999 118.3 115.7 114.5
11/1/1999 121.8 115.5 114.7
12/1/1999 120.0 115.4 114.9
1/1/2000 117.6 115.3 115.0
2/1/2000 121.4 115.1 115.1
3/1/2000 119.4 115.0 115.3
4/1/2000 112.6 114.9 115.4
5/1/2000 120.0 114.7 115.5
6/1/2000 117.8 114.6 115.6
7/1/2000 114.1 114.5 115.7
8/1/2000 118.9 114.6 115.8
9/1/2000 115.6 114.8 115.9
10/1/2000 116.8 115.0 116.0
11/1/2000 118.7 115.2 116.0
12/1/2000 112.3 115.3 116.1
1/1/2001 118.8 115.5 116.2
2/1/2001 114.5 115.6 116.2
3/1/2001 118.2 115.8 116.3
4/1/2001 115.5 115.9 116.3
5/1/2001 120.9 116.0 116.4
6/1/2001 115.5 116.2 116.4
7/1/2001 116.6 116.3 116.5
8/1/2001 120.2 116.4 116.5
9/1/2001 101.6 116.5 116.6
10/1/2001 108.8 116.6 116.6
11/1/2001 110.1 116.7 116.6
12/1/2001 108.6 116.8 116.7
1/1/2002 114.7 116.9 116.7
2/1/2002 110.7 117.0 116.8
3/1/2002 112.5 117.1 116.8
4/1/2002 116.3 117.2 116.8
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