2005

5.2

2020

6.2

2019

7.4

2014

7.9

1990

8.5

2001

7.8

2000

6.4

2014

8.4

2009

7.6

1999

8.4

2017

7.0

2004

8.1

1980

8.2

2018

7.4

2017

6.5

1982

7.9

2019

8.5

2015

7.5

2019

7.2

2015

5.9