| Locomotives | Percent of fleet | Freight cars | Percent of fleet | |
|---|---|---|---|---|
| 1998 | 1,061 | 5.2 | 83,076 | 6.3 |
| 1999 | 865 | 4.3 | 77,901 | 5.7 |
| 2000 | 721 | 3.6 | 58,245 | 4.2 |
| 2001 | 755 | 3.8 | 35,475 | 2.7 |
| 2002 | 778 | 3.8 | 18,832 | 1.4 |
| 2003 | 621 | 3.0 | 33,155 | 2.6 |
| 2004 | 1,126 | 5.1 | 47,843 | 3.7 |
| 2005 | 911 | 4.0 | 70,154 | 5.3 |
| 2006 | 1,080 | 4.6 | 76,528 | 5.6 |
| 2007 | 1,069 | 4.4 | 65,196 | 4.7 |
NOTES: Locomotive data are for Class I railroads only. Freight car data cover Class I railroads, other railroads, private car owners, and shippers.
SOURCE: Association of American Railroads, Railroad Facts 2008 (Washington, DC: 2008), pp. 49, 51, and 55.