2010

3.7

2007

6.5

1979

6.2

2018

6.7

2010

6.1

1998

2.0

2003

6.0

2021

4.6

2009

3.9

2008

6.8

2001

7.3

1996

6.5

2002

6.2

2002

6.8

1979

6.0

2006

6.4

2005

5.3

2017

3.3

1984

4.2

2007

6.5