2005

7.0

1969

7.0

2010

0.0

1970

6.2

2006

6.9

1987

7.7

1989

5.5

1987

6.3

1974

5.9

2013

5.5

1985

7.3

2009

5.8

1966

7.8

2014

5.0

1986

5.0

2007

7.4

1966

5.0

2013

0.0

2014

6.2

1999

5.9