2000

0.0

2010

7.8

1998

8.2

2014

7.6

2011

7.6

2015

8.2

1999

5.6

2009

7.5

1995

4.9

2013

7.7

2008

6.9

2019

6.0

9.0

2003

1.0

2002

7.3