2015

7.4

1995

7.6

2008

7.2

2015

7.8

2006

7.5

1988

8.1

2006

7.9

1990

7.1

2014

7.1

2018

7.2

2007

7.5

2013

7.3

2014

6.6

2019

6.7

2011

7.6

1993

8.4

2013

8.1

1986

8.4

2006

8.0

2017

6.5