2011

5.0

2018

5.8

1998

5.8

2009

3.5

1977

4.1

2009

6.0

2006

0.0

2015

4.6

2019

6.3

2002

6.4

2000

7.4

2017

6.7

2008

6.8

1992

5.0

1999

5.4

2010

4.5

2004

3.8

1989

6.0

2011

3.4

1991

5.8