2014

6.9

2017

7.2

1991

4.9

2002

7.8

2020

6.5

1980

6.6

2008

6.1

2017

6.6

2010

9.1

2003

6.2

2016

5.0

2017

6.9

2002

4.7

2019

5.7

2000

3.0

1997

6.1

2011

6.0

1989

9.3