1957

7.6

2019

8.2

2017

5.9

2012

7.2

2010

8.4

1997

7.9

1987

7.3

2006

7.4

2018

8.0

2004

6.6

2015

7.6

2005

7.7

2003

6.3

2015

6.4

2017

7.2

2011

6.6

2017

8.1

2020

7.1

2001

6.2

2017

8.1