2006

6.3

1990

7.4

2019

8.1

2016

7.6

2015

7.6

2007

7.8

2019

7.8

2011

6.9

2012

7.8

2010

7.7

2020

7.3

1985

8.3

2018

8.0

1981

7.3

1994

8.5

1994

8.7

1999

8.2

2014

8.5

2017

7.6

2004

7.4