1995

6.4

2006

6.8

1993

7.4

2020

5.6

2003

7.2

1996

5.3

2000

7.0

1998

6.6

2002

6.3

2002

8.0

1999

7.3

2005

7.4

2006

6.8

2014

8.5

2000

6.2

2001

5.6

2002

2.0

2017

0.0

1982

3.7

2010

3.4