2018

6.7

2009

7.6

2008

8.5

2015

8.0

2016

7.3

2011

8.3

1997

7.9

2012

7.8

2016

7.6

1994

8.7

2018

7.6

2010

7.7

2017

7.3

1994

8.5

1999

8.4

2013

6.8

2020

8.1

2010

8.4

2012

7.0

1989

8.3