1993

8.2

1997

5.6

1990

7.9

2002

7.6

2006

0.0

2000

8.5

1999

7.7

1978

7.0

1995

7.7

2001

7.4

2004

6.0

1998

7.1

2019

3.5

2018

5.6

1999

7.5

2006

7.1

2009

8.5

2020

0.0

2020

7.2

2013

7.5