1997

7.1

1975

7.7

1987

4.1

1982

7.5

1996

6.9

1990

7.5

1995

6.0

1976

7.1

1967

7.6

1994

6.6

2004

6.3

2017

3.9

1964

6.1

1954

7.6

1971

7.3

1983

4.5

2021

7.8

2017

5.8

1972

0.0

2007

7.4