1934

6.1

1985

7.2

2007

5.0

2002

5.1

2002

6.9

1950

6.8

1988

5.8

1987

5.4

2003

6.6

2002

6.1

2001

6.9

2007

6.9

2006

5.1

1937

5.8

2001

6.8

1977

7.4

1942

6.2

1966

4.5

1938

4.5

1996

6.7