1964

7.0

1973

7.7

1956

6.5

1968

6.9

2021

7.2

1955

6.3

2022

7.9

1969

7.0

2009

6.2

2002

7.4

1965

7.4

1971

7.7

1970

6.4

1980

7.1

2009

5.6

2011

7.3

1961

6.9

1985

6.8

1957

8.2

1984

7.0