2002

6.2

2005

6.3

2004

5.4

1992

5.0

2008

6.8

1997

7.6

1989

6.0

2004

3.5

2014

4.7

2011

5.1

2020

3.5

1982

4.3

1991

5.5

1987

0.0

2001

5.4

1977

3.8

1998

5.8

2025

0.0

2011

5.4

2015

4.4