1998

4.6

2009

8.0

2000

7.6

1991

3.8

2017

0.0

1995

7.3

2003

7.2

1989

8.0

2013

7.5

1992

5.5

2019

5.7

1992

4.4

2007

4.0

1990

8.3

1995

4.6