1994

7.1

2004

7.8

2008

6.5

2015

7.3

2018

7.6

1990

5.8

2012

7.2

2020

6.7

2012

5.0

2011

0.0

2000

3.5

2021

0.0

2017

7.2

1973

6.5

2015

6.9

2006

7.8

1976

0.0

1978

0.0

2017

6.0

2023

0.0