2020

8.8

2007

7.4

2023

5.5

1997

7.1

2011

8.3

1999

8.4

2009

6.8

2003

7.1

2015

6.0

2005

6.8

2009

6.6

1997

8.0

1998

6.8

2006

7.8

2001

7.7

2009

7.8

2009

6.2

2006

7.9

2009

6.7

2016

7.6