1992

8.6

2001

5.8

2007

7.5

2003

7.7

1997

7.7

2009

0.0

1985

2.7

2000

7.7

1986

8.7

2018

9.0

2008

5.9

2010

8.3

2014

10.0

2007

6.6

1966

5.7

1970

6.1

2007

7.4

1997

4.9

2023

6.0

2010

8.1