1980

7.0

2004

5.3

1999

6.4

1983

6.0

2008

5.9

2004

5.9

2006

5.2

1998

5.1

1995

5.9

2004

4.4

2020

1.0

2011

0.0

2010

5.5

1999

4.5

2016

5.4

1976

4.4

2011

6.3

1996

4.5

1975

4.8

2024

5.4