1992

3.5

1997

7.6

1993

2.0

2001

1.0

2008

6.7

2017

0.0

2011

4.2

2016

7.1

2008

4.1

1994

6.8

2006

4.9

2008

3.9

1999

6.0

2022

2.0

2001

4.0

1982

9.0

2008

6.0