1926

0.0

1979

6.9

1959

7.9

1997

7.4

1995

7.7

1979

7.7

2000

7.1

1961

7.3

1963

7.0

1964

7.0

1990

8.5

1939

7.9

1989

7.1

1969

6.0

1978

6.5

1988

7.1

1946

5.9

1989

6.4

2022

7.6

2017

6.3