2001

6.7

1976

4.8

1999

7.3

2005

6.3

1996

5.5

1987

5.3

1997

3.5

1984

5.9

1992

6.8

2004

1.8

1986

6.4

2013

3.2

1988

0.0

1982

6.4

1980

4.3

1997

5.1

2002

4.8

2007

6.1

2004

5.7

1981

6.9