2002

7.6

2004

7.4

2006

7.8

2001

7.3

2001

7.0

1963

7.6

1966

6.4

2005

6.2

1995

6.8

1987

5.8

1954

5.9

1935

6.6

1960

7.6

1954

10.0

2007

5.2

1972

5.7

1981

10.0

2008

6.4

2017

6.3

1965

7.9