2015

3.3

1958

8.2

2013

5.8

1998

7.5

2017

6.9

2014

7.9

2016

7.1

2005

6.6

1993

5.5

1984

7.3

2016

7.3

2016

6.9

2006

6.9

2015

6.3

2019

5.9

2016

6.7

2014

5.4

2013

7.8

2002

8.4

2016

7.0