1977

7.1

1950

6.4

1943

7.2

1987

8.1

1998

7.5

1989

5.6

2004

7.1

1989

6.1

1950

5.5

1953

6.3

1988

0.0

2011

5.8

1961

6.9

1951

7.0

1980

6.7

1958

6.4

1969

4.7

1958

4.2

1944

6.0

2005

8.5