1992

7.5

1980

6.9

1980

0.0

2000

7.9

2005

7.6

2005

6.3

2014

8.0

2016

4.0

1992

7.0

1976

0.0

2006

7.4

2015

6.0

2009

6.8

1977

7.5

1992

6.0

1984

6.7

1988

5.2

2013

6.0

1975

7.8

1995

6.6

1990

7.3