2002

5.3

1975

3.2

1994

6.6

1982

6.8

1981

0.0

1990

7.4

2001

7.6

1999

7.9

2011

8.1

1997

6.4

1996

5.5

1993

6.7

2011

7.3

1999

5.7

2009

7.6

1982

4.7

1999

6.7