2016

6.5

1993

6.2

2004

6.8

2005

6.6

2020

7.1

2017

8.0

2015

7.3

2014

8.5

2018

7.5

1998

8.1

2009

7.6

2016

7.9

2017

7.6

2016

7.3

1994

8.7

2017

6.7

2001

7.9

2014

7.4

1980

8.2

2015

7.5