1974

7.9

1985

7.7

1950

8.0

2003

7.8

2001

6.2

2001

7.4

1997

6.9

1962

8.0

1998

6.4

1925

7.6

1995

7.3

1951

7.6

1983

4.3

2022

6.3

1971

7.2

1998

6.6

2005

6.7

1966

7.4

2017

5.9

2004

4.8