2005

5.3

2002

6.8

2003

5.9

1991

6.4

1997

6.1

1970

7.1

1966

7.6

1950

3.8

2010

3.9

0.0

2003

5.4

2006

6.0

1970

5.0

1996

5.3

2007

4.0

1971

4.0

2021

7.0

1995

6.0

2014

6.7

2006

5.5