2006

6.5

2002

6.4

2004

5.6

2015

6.4

1992

5.0

2009

5.3

2008

6.8

1991

5.8

1990

5.3

1989

6.0

2004

3.8

2023

0.0

2011

5.1

1983

4.0

1998

5.8

1977

4.1

2015

4.6

2009

6.0

2006

1.0

1972

0.0