2010

7.8

2000

3.9

2012

7.6

1999

6.0

2006

7.4

2016

4.8

2020

6.7

2014

7.1

1990

7.4

2001

7.6

1996

1.0

1997

8.0

2009

7.5

2000

7.5

1998

7.4

1995

7.4

2020

7.7

1999

7.9

0.0

2008

0.0