2020

7.5

1994

8.4

2011

8.5

2019

8.7

1989

8.2

2001

8.6

2015

8.7

2016

7.3

2003

7.6

2002

8.3

2012

6.8

2016

8.6

2009

7.9

2013

8.1

1989

8.0

2010

8.0

2001

8.0

2008

8.9

2002

8.6

2014

8.5