1999

6.1

2025

6.6

1985

6.2

1991

5.9

1988

5.2

1976

7.4

2001

6.3

1998

6.8

1999

4.3

2006

5.7

1959

6.9

1990

5.0

2006

6.8

2000

6.1

1946

5.7

1943

6.9

1994

7.5

2007

5.6

1999

6.5

1991

5.9