There is nothing to hint that this might increase exponentially so the application of a doubling time is highly suspicious.
You say potato, I say potato...(ok, so that doesn't exactly work in text)

It's a nomenclature snafu and quick writing.  I was simply after the fact that 5 more years from 2005 (aka 2010) that by following the trend line, the number will have doubled (from 4 to 8mbpd).  Also that Oil CEO had artificially closed the gap in 1995 by 7.5mbpd.  So adding the trendline number and the artificial gap closing number, it comes CEFGW to the ASPO number, whether that means anything or not.