1964

5.3

2001

6.6

1999

8.4

1999

7.4

1999

6.8

2002

7.4

2004

8.2

1983

7.2

1966

6.4

2005

7.6

1990

6.6

2008

0.0

1988

7.8

2004

7.8

2006

7.2

2002

8.1

2010

7.6

2007

6.7

1965

7.4

2000

7.8