1945

6.0

2008

4.2

1980

7.8

1961

6.9

2005

10.0

1965

7.1

2001

5.8

2001

6.7

2003

7.3

1974

6.5

1987

6.5

1997

6.2

1956

7.1

1996

6.9

2016

7.5

1973

7.1

1995

4.6

1996

5.8

2011

6.6

2008

7.6