1996

6.4

2003

6.7

1916

0.0

1990

4.0

1987

5.6

2000

7.9

1992

6.5

1991

7.4

1995

5.0

2004

3.7

1989

5.0

1987

8.4

2004

5.7

2001

6.4

1984

7.0

1990

7.9

1999

8.3