1996

7.2

2009

7.4

1950

7.6

1995

7.8

1970

7.6

2007

6.7

1989

6.0

1987

6.8

1974

7.5

1972

7.9

1973

7.3

1964

6.7

1965

6.9

2022

7.1

1954

7.2

1988

7.6

1981

5.5

1954

7.4

1983

7.0

1990

6.1