2014

6.3

2005

5.8

2014

5.3

2007

7.9

2006

7.0

2016

7.4

2018

8.2

2009

5.3

1980

6.4

2017

7.0

2016

7.8

1999

8.4

2019

7.3

2015

7.2

2019

7.4

2019

6.0

1990

6.1

1932

7.3

1996

5.5

2014

7.4