1964

6.2

1965

6.1

1964

6.3

1950

6.8

2003

6.3

1963

6.9

1964

6.6

1952

6.2

1965

6.9

2001

6.8

1968

6.4

1953

6.6

1962

7.0

1955

7.2

1954

5.4

1966

6.3

1939

7.6

2018

4.8

1954

6.1

1967

7.1