2006

6.5

2001

5.9

1986

6.3

1947

6.4

1966

7.1

1979

5.7

1980

5.3

2003

6.5

1959

6.9

1994

5.8

1997

5.0

1985

4.1

2006

6.0

2020

7.5

2006

7.0

2008

4.6

1968

6.4

1944

6.3

2001

5.6

2009

5.2