2014

7.8

2014

7.3

2016

8.6

2017

8.0

2009

7.5

2015

7.6

2011

7.1

2012

6.4

2010

7.8

2014

7.6

1990

7.4

2007

8.2

1989

8.4

2013

7.9

2020

7.7

2020

8.0

2010

7.7

1965

7.8

2017

8.1

2018

6.9