2007

6.3

2004

7.3

2021

7.5

2015

6.5

2019

6.0

2007

5.7

2000

6.8

1989

7.2

2009

7.9

2013

4.3

2017

0.0

2021

0.0

1991

0.0

1980

0.0

1980

0.0

2012

0.0

0.0

1991

6.0

1968

0.0

1968

0.0