1971

7.4

1949

6.5

1992

5.6

1990

6.8

2011

6.0

1998

6.2

2008

6.9

1968

6.6

1957

7.2

0.0

1996

3.3

1959

7.5

2020

8.3

1981

8.0

2025

7.0

2010

0.0

1990

5.0

1963

0.0

1978

4.3

1988

5.5