1956

7.6

2008

6.2

2001

6.8

2003

5.6

1944

7.6

1998

6.5

2007

5.6

1992

4.1

1997

6.1

1995

4.9

2005

6.0

1995

8.2

2014

6.5

2012

5.7

1980

7.9

2004

6.3

1962

7.6

1939

7.2

1997

6.3

1996

7.0