Original: From 2002 to 2008 the flow was increased from 1% to 4%, however targets of 15% by 2009 and 21% by 2012 are unlikely to be met.
Simplified: From 2002 to 2008 the flow was increased from 1% to 4%. The agreement planned to increase the flow to 15% by 2009 and 21% by 2012.