2000

6.9

2003

6.2

1980

7.5

2007

7.3

2012

3.9

1994

7.2

2008

6.5

2013

10.0

2000

2.0

1992

7.2

2009

6.8

1997

6.7

2000

4.8

2002

5.3

2002

5.5

1997

6.8

2006

5.8

1985

5.6

1996

3.0

2017

8.7