1995

6.5

1954

7.9

1998

6.8

2006

6.9

2004

5.7

2001

6.2

2003

7.2

1993

6.2

1975

7.3

1995

8.0

1969

6.0

1992

7.4

1944

7.6

2007

7.5

2007

6.4

2005

7.1

1997

7.5

2020

7.1

2007

4.8

1979

5.2