1994

3.0

2005

4.8

1996

0.0

2002

6.2

1980

7.0

1995

8.2

2009

5.6

1993

7.2

2004

5.1

2006

4.8

2006

4.7

1993

6.0

1995

5.6

1994

7.0

1993

7.5

1997

5.3

2003

7.4

1998

4.7

2012

5.3