2016

4.7

2019

7.6

2021

5.7

2009

2.8

1999

8.2

1993

7.7

2005

4.9

2005

8.2

2014

8.3

2004

8.6

2007

8.1

2003

7.6

2009

7.5

2007

7.6

1988

6.8

2007

7.1

2007

4.6

2012

7.2

2014

8.2

2015

5.9

1990

7.9

2018

8.5

2022

8.0

1998

5.2