1999

7.2

2018

7.0

2020

4.8

2011

2.8

1991

6.6

1989

0.0

1991

5.3

2006

3.3

1989

5.6

2003

4.4

2000

5.0

2004

2.6

2009

0.0

1998

3.8

2009

2.5

1996

6.1

2018

6.6

1998

0.0

2001

5.2

2000

6.6