2002

6.4

1989

6.0

2004

3.8

2008

6.8

1992

5.0

1991

5.8

1998

5.8

1977

4.1

1981

5.0

2011

5.0

2015

4.6

2009

6.0

2017

6.7

2006

0.0

2024

0.0