2013

6.1

2015

6.1

1988

6.3

2007

7.6

2008

5.3

1992

5.7

2021

6.6

2012

6.2

2014

5.4

2007

7.1

2020

6.9

1990

6.5

1996

6.4

1990

6.3

2013

5.9

2011

7.1

2017

5.9

2008

5.7

2014

6.5

1999

5.9