2001

5.2

1996

4.0

1993

6.2

2007

3.7

2016

6.0

1985

6.3

2003

5.3

1987

7.7

1981

7.2

2013

3.5

1992

4.8

1986

6.7

2007

5.0

2004

3.1

2008

8.4

1980

0.0

1994

5.8

2001

8.4

1987

6.9

1989

5.5

2000

5.6

1998

5.0