2008

6.2

0.0

2013

6.0

2011

0.0

1986

7.9

2005

6.7

1962

8.0

1957

8.1

1974

0.0

2003

7.8

1984

7.0

1998

7.7

1996

6.9

1999

8.0

0.0

2006

5.2

1990

0.0

2006

6.3

1991

6.7

2006

7.2