1964

7.6

1953

4.0

2004

6.8

1959

6.1

1943

0.0

2003

5.1

1978

7.4

1946

6.0

1967

7.7

1994

7.3

1951

7.0

2006

7.0

1999

7.3

2003

6.6

1976

6.6

2006

6.8

1934

7.0

2007

7.1

1997

6.7

2010

0.0