1965

7.9

2019

8.7

1981

6.6

1898

5.8

1964

7.1

1966

7.0

1972

7.9

1959

6.4

1964

8.2

1992

6.8

1983

7.5

1955

7.4

1973

6.3

1989

5.7

2004

6.9

1985

6.9

1941

7.4

1923

6.8