2020

8.7

2019

6.8

2014

6.8

2016

7.5

1990

7.9

2006

7.9

2011

8.4

2009

8.3

2022

5.9

1978

9.7

2006

7.5

2010

8.2

2003

8.1

2015

7.3

2012

6.6

1990

7.1

2008

7.7

2016

7.1

1969

7.3