1964

4.9

1974

6.8

1980

5.6

1948

5.9

1994

7.3

2008

6.9

1971

7.5

1987

7.6

1986

6.9

1979

7.7

2018

7.8

1982

7.9

2004

5.7

1963

7.1

2003

7.4

1960

7.4

1957

8.1

2017

7.6

1934

7.8

2021

7.0