2005

6.7

1973

4.7

2014

7.0

1972

7.4

1952

6.7

1956

7.0

2009

6.1

1947

7.5

1986

5.3

1961

7.2

1991

6.5

1980

4.8

1957

5.6

1976

4.8

1950

8.3

1951

6.5

1943

6.7

1949

6.4

1934

5.9

1950

6.9