1989

5.1

2018

6.9

2015

7.3

2012

6.6

2014

7.9

1979

7.5

2014

7.7

2019

6.4

2014

6.7

2008

6.8

2014

6.2

2019

7.4

1977

7.1

2025

0.0

2005

6.6

2009

7.6

2015

7.1

2013

5.8

2017

7.1

2019

6.8