1944

6.6

1945

6.5

1960

6.8

1943

7.2

1958

6.9

2004

5.9

1950

6.4

1966

7.2

1960

5.0

2002

6.4

1964

5.5

2008

6.1

1990

6.7

2001

6.1

2006

6.7

2006

4.9

1953

5.0

1985

4.0

2007

5.6

1963

7.9