1982

9.0

2017

5.8

1991

5.4

1993

5.3

1975

6.1

1954

7.9

1990

8.5

1948

7.9

1988

7.7

1996

7.4

2000

5.0

1980

6.1

1970

7.1

1999

5.9

1999

7.3

2001

4.9

1973

6.8

1946

6.0

1929

0.0

2005

4.0