1989

0.0

2006

5.3

2009

4.5

2008

5.9

1992

5.6

2024

6.9

2008

4.6

2002

6.4

1996

2.0

2018

1.0

1970

6.2

2011

0.0

2013

6.9

2017

6.6

2013

5.2

2005

4.5

2021

1.0