1976

7.4

1988

6.7

1995

6.5

1990

6.5

1994

5.3

1979

6.1

2021

6.6

1974

7.2

1962

7.8

1971

7.4

1994

5.4

1968

6.5

1985

7.0

2014

6.5

1946

7.4

1948

7.3

1970

7.5

2020

5.2

2003

6.1

1999

5.3