2009

7.3

2002

6.8

2004

6.6

1996

5.5

2006

8.2

1990

6.9

1994

7.8

1994

8.4

2005

8.2

2005

8.1

1991

7.8

2006

10.0

1990

7.9

1995

6.4

1962

7.4

2003

7.5