2004

6.4

2009

4.9

2018

6.4

2005

8.7

2004

4.9

2001

4.5

2008

6.8

2006

5.3

2014

0.0

2000

6.1

1983

6.2

1986

6.0

2022

0.0

2017

7.7

1962

5.6

1983

8.0

0.0

1976

7.3

2009

7.3

2021

7.2