1998

7.3

1946

7.7

1990

7.5

1998

7.8

1998

4.7

2004

3.4

1991

6.7

1997

5.1

2003

6.2

1997

5.3

2004

6.2

1997

4.5

1974

6.3

1985

6.6

1994

6.5

1932

0.0

1960

7.6

2006

5.5

2001

6.3

2006

5.9