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Statistics

2019

Quarterly contributions 2019

2018

Quarterly contributions 2018

2017

Quarterly contributions 2017

2016

Quarterly contributions 2016

2015

Quarterly contributions 2015

2014

Quarterly contributions 2014

2013

Quarterly contributions 2013

2012

Quarterly contributions 2012

2011

Quarterly contributions 2011

2010

Quarterly contributions 2010

2009

Quarterly contributions 2009

2008

Quarterly contributions 2008

2007

Quarterly contributions 2007

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