1998

4.7

1994

5.9

1997

0.0

1995

6.1

1996

4.3

2004

5.0

1987

6.4

1993

5.2

1994

4.6

1998

7.8

1986

5.3

1987

6.0

2012

6.3

1998

6.0

2011

5.5