2007

7.6

2014

3.9

2010

3.4

2015

6.3

1998

5.0

1985

8.0

2022

7.0

2008

5.8

2013

4.8

2010

7.0

2009

6.0

2015

6.0

1990

6.9

2017

7.3

2016

7.0

1996

8.2

2021

7.0

2014

7.0

2017

7.3