1994

5.1

1998

4.7

1993

8.3

1992

2.9

1986

5.8

1985

5.7

2003

5.5

2005

6.0

2015

7.0

2004

6.2

1992

5.5

2014

4.8

1997

5.1

2015

5.1

1980

0.0

1987

6.6

2003

5.8

1994

5.3

1991

6.9

2001

5.4

1991

8.0

1990

0.0

2001

6.6