1998

3.8

2008

3.6

2016

6.7

2009

6.0

2005

8.5

2002

4.8

1984

7.3

2022

7.1

2000

0.0

2014

7.4

2009

5.9

2015

10.0

2003

8.2

2017

5.6

2009

5.8