2004

5.7

2005

7.8

1975

6.4

2005

5.9

2008

7.0

1983

6.7

2002

6.0

2003

5.7

2007

7.3

2011

6.9

1986

7.6

1988

7.0

2008

5.2

2018

6.6

2014

7.1

2003

4.1

1966

6.5

2012

7.0

2011

7.5

2014

5.7