1999

8.1

2003

6.6

1991

7.5

1994

6.0

1997

6.3

2023

6.5

1984

7.3

2000

8.2

1989

5.6

1992

6.2

1985

7.7

1984

7.3

1987

8.4

1998

6.8

2001

7.2