2003

7.3

2007

7.3

1998

0.0

1979

6.8

2002

4.6

1992

6.0

1989

0.0

1997

7.8

1990

7.9

2004

4.9

1996

6.7

1999

8.2

1996

6.8

2001

5.5

1995

7.1

2012

4.6