1986

8.7

1997

4.9

2000

7.7

2014

10.0

1985

2.7

1966

5.7

1970

6.1

2007

7.4

2007

6.6

2010

8.1

2000

7.1

2001

5.8

2005

6.7

2024

8.4

2018

9.0

2010

8.3

2007

7.5

2003

7.7

2009

0.0

2006

7.6