So what is the size of the BPM market and how fast will it be increasing? Well the answers vary a little bit so I will try and average it out a little bit.
In 2007 Gartner said the size was $1.0B and would grow to $2.6B in 2011
In 2007 Forrester said the size was $1.6B in 2006 and would grow to $6.3B by 2011
In 2007 IDC predicted a market size of $5.5B in 2011 at a 5 year growth rate of 44% therefore they had the 2007 market size pegged at $1.28B
In 2007 Datamonitor said the market size was $1.4B a predicted a 14.5% growth rate.
In the below table I have extrapolated the yearly market size based on the end points and a constant growth rate.
So as you can see the current size of the market is not that different but the expectations on growth are fairly significant. Also please keep in mind that these estimates were done pre financial crisis. It will be interesting to see in which way the crisis effect the BPM industry. I know the company I work for has actually experienced a sharp spike in customer enquiries since the down turn.