2004

7.4

1959

8.4

2017

7.2

2012

6.8

2006

8.6

2002

7.9

2006

8.2

2019

6.9

2008

7.7

2003

7.5

2001

7.8

2014

8.2

2020

7.3

2014

7.6

1999

8.6

2016

8.0

1993

8.1

2014

7.9

2009

7.6

2010

7.8