2003

7.4

2006

7.0

2005

7.4

1983

8.1

1998

7.2

1990

7.4

1998

7.0

1987

5.7

2000

8.2

2005

8.7

1966

8.0

2006

0.0

1994

7.0

1982

6.8

1997

5.0

2001

7.6

1995

7.3

1964

7.7

1997

5.7

2020

6.2