2002

6.6

2004

6.4

2005

6.7

1981

7.2

1939

7.5

1965

4.0

1999

6.8

1983

7.3

1972

6.0

1972

7.5

1979

6.0

1966

6.0

1970

4.4

2002

6.7

1975

6.3

1987

6.3

1974

5.9

2006

4.0

2020

5.6

2006

7.6