2005

5.3

2006

6.7

2009

0.0

1964

6.6

2000

7.1

1970

5.9

1935

6.8

1958

7.2

1998

7.2

1982

6.9

1948

6.0

1983

6.9

1921

5.7

1989

7.6

1990

6.0

1978

0.0

1958

6.7

1971

6.6

1978

7.2

2001

6.4