Operating Expense by Function Class

YEAR

VEH-
ICLE OPERA-
TIONS

VEH-
ICLE MAIN-
TEN-
ANCE

NON-
VEH-
ICLE MAIN-
TEN-
ANCE

GEN-
ERAL ADMIN-
ISTRA-
TION

PURCH-
ASED TRANS-
PORTA-
TION

OPERA-TING EX-
PENSE

1990

6,653.3

3,038.8

1,592.0

3,449.9

1,008.1

15,742.1

1991

6,726.6

2,992.4

1,604.7

3,584.5

1,633.2

16,541.4

1992

7,659.7

3,047.5

1,783.9

2,674.2

1,616.1

16,781.4

1993

7,941.4

3,049.3

1,845.0

2,714.0

1,800.1

17,349.8

1994

8,211.9

3,184.5

1,819.4

2,752.0

1,952.1

17,919.9

1995

8,281.9

3,218.2

1,829.0

2,589.5

1,930.1

17,848.7

1996

8,331.9

3,295.1

1,802.2

2,744.3

2,167.2

18,340.7

1997

8,602.1

3,372.6

1,838.8

2,919.9

2,202.7

18,936.1

1998

9,176.7

3,579.2

1,783.9

3,065.8

2,132.9

19,738.5

1999

9,333.0

3,742.1

1,906.8

3,164.4

2,365.8

20,512.1

2000

10,110.9

4,267.1

2,177.7

3,328.8

2,761.0

22,645.5

2001

10,438.8

4,348.4

2,290.1

3,463.1

2,976.5

23,516.9

2002

11,057.4

4,550.6

2,448.1

3,807.8

2,970.1

24,834.0

2003

11,935.5

4,822.1

2,545.7

3,962.4

3,585.8

26,851.6

2004 P

12,865.8

5,042.6

2,790.2

3,974.3

3,832.9

28,505.8

2004 % of Total

45.1%

17.7%

9.8%

13.9%

13.4%

100.0%