2003

4.9

1980

4.0

2006

7.8

2007

0.0

1992

4.6

1951

6.4

1947

6.3

2010

6.5

2014

6.1

2008

0.0

2009

0.0

1993

8.0

1997

6.5

2001

6.1

1954

8.5

1979

8.2

2004

5.9

2016

7.0

2007

5.6

2000

6.0