1932

7.4

1960

8.4

1972

7.4

1948

5.9

2002

6.8

1997

6.3

1934

5.2

1959

4.3

1997

6.7

1989

5.9

1970

5.1

1942

6.9

1963

5.6

2003

6.6

1941

6.9

1963

5.9

1990

1.0

1937

6.2

1991

6.2

1967

6.1