1960

6.4

1977

0.0

1941

7.2

1947

6.0

1956

4.6

2017

5.7

1970

5.8

2000

7.8

1997

3.5

1964

6.2

2001

6.8

1947

5.0

1975

5.4

1955

6.6

2016

5.0

1989

6.3

1997

6.0

1968

6.7

1989

7.2

2003

5.3