Figure 1,,,,
Class I Railroad Performance Indices: 1975–1999,,,,
Index: 1975 = 1,,,,
,Revenue ton-miles ,Employees,Labor productivity (revenue ton-miles per employee),Revenue (real)
1975,1,1,1,1
1976,1.05,0.99,1.01,1.07
1977,1.1,0.99,1.06,1.09
1978,1.14,0.97,1.18,1.1
1979,1.2,0.97,1.23,1.17
1980,1.22,0.94,1.3,1.2
1981,1.21,0.89,1.35,1.21
1982,1.06,0.78,1.36,1.01
1983,1.1,0.66,1.66,0.98
1984,1.22,0.66,1.85,1.04
1985,1.16,0.62,1.88,0.94
1986,1.15,0.57,2.04,0.88
1987,1.25,0.51,2.46,0.87
1988,1.32,0.48,2.73,0.88
1989,1.34,0.47,2.88,0.85
1990,1.37,0.44,3.1,0.83
1991,1.38,0.42,3.26,0.78
1992,1.41,0.4,3.5,0.78
1993,1.47,0.4,3.72,0.77
1994,1.59,0.39,4.09,0.81
1995,1.73,0.39,4.49,0.83
1996,1.8,0.37,4.82,0.83
1997,1.79,0.36,4.9,0.83
1998,1.83,0.36,5,0.81
1999,1.9,0.36,5.21,0.81

"SOURCE: Association of American Railroads, Railroad Facts (Washington, DC: ",,,,
Annual issues).  ,,,,