1948

7.2

1986

6.7

1931

6.9

2010

4.8

1968

6.9

1957

7.2

1969

6.1

1921

6.8

1973

6.8

1983

7.2

1981

6.3

1990

6.7

1937

7.1

1989

6.3

1955

7.4

1982

7.2

1970

6.3

1966

6.6

1987

4.6

0.0