2007

4.0

1980

6.6

2017

6.9

1997

6.1

2002

6.8

2009

6.6

1964

7.1

1970

0.0

1996

6.4

1988

6.3

2013

8.5

2005

5.3

2003

5.9

2001

7.3

2016

3.3

2005

4.0

1970

7.2

2010

3.9

2005

5.5

2007

5.0