2000

7.4

2021

7.2

2020

7.2

1985

6.1

1980

7.0

1984

7.3

1999

7.5

1975

6.4

1960

7.6

2017

7.6

1960

7.2

1935

7.5

1962

6.9

2006

6.7

2001

7.0

1933

7.5

2020

7.2

1978

7.6

1966

7.3

2006

5.8