2003

7.8

1990

6.8

1987

7.5

1984

6.7

1983

6.5

1995

7.3

2025

8.5

1967

7.4

1999

7.4

1976

5.3

2005

7.2

2007

7.9

2005

6.6

2017

5.9

2020

4.0

1989

7.4

1994

7.6

1994

6.7

1990

5.1

1994

5.3