2015

4.0

1993

5.5

2014

4.5

2003

5.8

2012

6.0

2009

6.6

1998

6.3

2010

5.2

2016

5.5

2010

6.6

2011

3.3

2019

10.0

1992

4.6

2019

7.0

2017

7.7

1970

8.0

2000

6.3

5.7