Historical Statistics of the United States Millennial Edition Online

		Df109	Df110	Df111¹	Df112	Df113²
		Air carrier, domestic, scheduled service	Class I bus, intercity	Local transit, all modes	Commuter rails	Intercity and Amtrak
Row	Year	Dollars	Dollars	Dollars	Dollars	Dollars
1	1960	34.12	2.46	0.14	0.64	4.22
2	1961	34.15	2.48	0.14	0.65	4.21
3	1962	34.18	2.50	0.15	0.66	4.20
4	1963	34.22	2.52	0.15	0.67	4.00
5	1964	34.13	2.55	0.15	0.68	3.86

6	1965	34.12	2.73	0.16	0.71	3.92
7	1966	33.41	2.71	0.16	0.72	3.83
8	1967	33.16	2.79	0.17	0.72	3.48
9	1968	33.70	2.91	0.19	0.75	3.16
10	1969	37.52	3.55	0.21	0.78	3.15

11	1970	40.65	3.81	0.22	0.84	3.19
12	1971	43.13	4.19	0.23	0.87	9.58
13	1972	43.87	4.25	0.24	0.93	9.31
14	1973	45.72	4.73	0.25	0.95	9.85
15	1974	51.43	5.13	0.27	1.00	12.20

16	1975	53.64	5.46	0.27	1.04	12.96
17	1976	57.47	5.76	0.27	1.15	12.88
18	1977	60.67	6.48	0.28	1.16	12.90
19	1978	61.07	6.89	0.29	1.20	13.16
20	1979	63.81	7.71	0.29	1.25	14.93

21	1980	84.55	10.57	0.30	1.41	17.72
22	1981	95.42	10.30	0.33	1.70	21.25
23	1982	92.08	10.90	0.38	1.89	22.38
24	1983	92.17	10.66	0.39	2.31	23.78
25	1984	97.10	11.09	0.50	2.92	24.80

26	1985	92.53	11.02	0.53	2.85	25.78
27	1986	84.99	12.35	0.58	3.07	26.35
28	1987	88.95	12.28	0.59	3.18	29.61
29	1988	96.67	17.15	0.60	3.35	32.70
30	1989	103.65	18.62	0.61	3.41	37.43

31	1990	107.86	20.18	0.67	2.90	38.51
32	1991	106.78	21.86	0.70	3.01	40.32
33	1992	103.60	21.15	0.72	3.09	40.19
34	1993	109.80	21.32	0.77	3.09	39.37
35	1994	103.21	19.77	0.85	3.19	38.16

36	1995	106.66	20.10	0.87	3.13	39.03
37	1996	110.37	22.85	0.93	3.25	42.54
38	1997	114.10	20.57	0.89	3.30	44.31