2002

7.6

1990

8.5

1999

7.3

2004

8.3

2000

7.0

2007

8.1

1971

5.3

2002

7.6

1971

7.9

2000

8.5

1983

7.6

2004

8.4

1997

5.6

2005

6.8

1978

7.7

1990

7.8

2006

5.0

1990

7.9

2004

7.5

2021

0.0