2009

3.8

2022

4.1

1978

7.5

1985

8.3

1995

7.7

2017

6.2

2002

6.2

2007

6.6

1992

7.0

2008

4.5

1978

6.0

2008

5.6

2020

4.8

2008

5.9

2016

6.5

2017

6.8

2010

4.6

2006

7.6

2008

5.0

2006

6.3