2003

7.2

2007

7.3

1979

6.8

2002

4.6

1992

5.7

1989

0.0

1997

7.6

1990

7.9

2004

4.9

1996

6.7

1999

8.1

1996

6.9

2001

5.4

1995

7.1

2012

4.6