2011

5.7

2023

7.2

2000

5.2

2012

6.4

2010

5.6

2003

5.3

2008

7.5

2018

6.0

2006

5.6

1980

5.3

1992

6.0

2006

6.2

2021

6.5

2009

6.8

1996

7.1

1978

6.5

2008

5.8

1982

6.9

2005

7.3

1996

6.2