2003

8.6

2002

7.4

1992

6.8

2016

8.5

2015

7.7

2013

7.9

2008

7.5

2010

7.6

2007

7.3

1993

8.3

2010

8.1

2020

8.2

2021

7.2

2017

7.9

2019

7.8

2009

8.5

2017

8.5

2014

7.8

2013

8.6

1980

8.6