2003

5.0

2005

5.2

2004

6.1

1974

4.7

1983

5.6

1984

2.0

1965

1.0

2004

7.3

2006

5.5

1982

6.1

2002

1.0

2006

6.3

2004

7.9

1999

0.0

2001

3.0

2010

5.3

1988

4.6

2009

7.8

1968

5.0

1967

6.9