2013

0.0

1985

6.5

2002

6.1

1981

6.7

2005

5.6

2018

5.1

2005

6.3

2016

7.2

1989

5.9

1984

6.8

2008

6.8

2008

4.5

1987

4.0

2005

6.8

2005

6.1

1996

6.7

1975

5.8

2003

6.0

2007

6.6

2002

7.1