2015

8.2

2011

6.6

1987

5.7

2007

5.6

1995

5.4

2005

7.1

2019

7.2

2010

6.2

2004

4.6

1992

6.9

2016

6.5

2014

5.2

1989

7.2

2004

6.4

2012

7.4

2011

6.5

2016

7.7

2020

4.8

2016

4.6

2022

8.6