Figure 1-14 Air Revenue Passenger-Miles (RPMs), 2000 to 2016

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Figure 1-13 Natural Gas Consumption, 2000 to 2016

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Figure 1-12 Pipeline Petroleum, 2000 to 2016

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Figure 1-11 Waterways Tonnage, 2000 to 2016

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Figure 1-10 Air Revenue Ton-Miles of Freight and Mail (RTMFM), 2000 to 2016

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Figure 1-9 Rail Freight Intermodal, 2000 to 2016

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Figure 1-8 Rail Freight Carloads, 2000 to 2016

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NOTES: Monthly rail carloads and intermodals are estimated by dividing the weekly sum by 7 (7 days in a week) and then summing for the number of days in the month (31 days for May, 30 days for June, etc.).

SOURCES: U.S....

Figure 1-7 Truck Tonnage Index, 2000 to 2016

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Box 1-4 Seasonal Adjustment

Seasonal adjustment is the process of estimating and removing seasonal movement. Seasonal adjustment decomposes a time series into a seasonal part and an irregular part. The goal is to remove changes in the data happening at the same time and with the same magnitude and direction every year...

Figure 1-6 Monthly Freight TSI and Inventory to Retail Sales Ratio, 2000 to 2016

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