Here is the zero-based graph: http://www.coindesk.com/price/#2013-01-01,2014-03-31,close,bpi,USD http://www.coindesk.com/price/#2013-01-01,2014-03-31,close,b..

Here is the zero-based graph: http://www.coindesk.com/price/#2013-01-01,2014-03-31,close,bpi,USD http://www.coindesk.com/price/#2013-01-01,2014-03-31,close,b... Edit: Or it would have been if the link worked.. But put the start date at 2013-jan-01.