2015

7.4

2010

7.1

1969

6.0

2018

6.5

1966

7.1

2014

3.7

1971

7.1

1963

7.6

2019

5.8

2009

6.8

2014

7.4

2013

4.6

2016

7.0

2017

4.5

5.7

2015

7.2

2001

6.0

2001

7.9

2013

6.6