1994

8.9

1997

5.0

1996

4.4

1990

7.2

2015

5.8

2017

5.5

2019

8.0

2020

8.3

1991

6.1

2006

5.6

2023

0.0

2008

0.0

2002

6.5

1999

5.8

2000

6.2

1999

0.0