|Percent available for servicea||N||87||83||93||84||88||89||U|
|Average age (years)b||22.3||14.4||7.4||7.0||12.0||13.9||11.2||U|
|Passenger and other train cars|
|Percent available for servicea||N||82||77||90||90||90||91||U|
|Average age (years)b||22.0||24.7||14.3||14.2||20.0||21.8||19.4||U|
KEY: N = data do not exist; U = data are not available.
a Year-end daily average. Active units less backshop units undergoing heavy maintenance less back-ordered units undergoing progressive maintenance and running repairs.
b Year-end average.
1972 was Amtrak's first full fiscal year of operation.
1972-80: Amtrak, Amtrak Annual Report (Washington, DC: Annual issues).
1985-2000: Ibid., Amtrak Annual Report, Statistical Appendix (Washington, DC: Annual issues).