2016

4.7

1991

4.6

1993

6.4

1992

6.0

2004

7.9

1995

6.1

1994

6.3

1997

10.0

1994

4.2

1990

4.0

1993

7.1

2000

9.4

1991

0.0

2009

5.9

2001

3.9

1996

3.5

1997

4.0

1990

6.9