2008

6.8

1994

7.2

2005

7.7

1984

7.3

2003

7.2

1985

5.0

2004

7.7

2006

6.8

2009

6.6

1999

7.9

1992

6.0

2014

7.0

2007

7.5

2000

7.5

2007

6.6

1982

3.5

1987

5.0

1991

4.8

1965

5.5

1969

4.8