Here are a few tables summarizing the sales by the end each year from 2005 to 2008 (as of Dec 27, 2008).

There are a few interesting points to clarify.

a) There is no year PS3 sold more than Xbox 360 so far. 360 has consistently outsold PS3 each year, although the difference is not that big. PS3 sold 96% and 92% as many as 360 in 2007 and 2008.

b) The gap between 360 and PS3 has consistently increased by the end of each year.

c) On the other hand, The fraction of PS3 in terms of 360 has consistently been increasing as well. The fraction of PS3 were only 15.5% of 360s in 2006 which rose to 71% in 2008.

d) Yearly Sales of all consoles have increased.

e) Market Share of 360 has sharply decreased to 29.6%, with Wii surging to 49.4% and PS3 21%

f) Wii's market share might be 49.4% now, but the market share for 2008 sales has been 54.6%, signaling to a tendency for an increased market share. It would very well go beyond 50% at this pace.

This list will be updated next week by the way!

Nice group of tables. Really shows the Wii and how it's yearly sales percentage is going up and up each year. Next year can it hit 60%? And interesting that PS3 hasn't beaten 360 in a yearly battle yet. Next year if the PS3 gets a price cut then that might change.

Nice work. But... is it wrong to laugh uncontrollably at "Yearly Cum."?

A snicker or guffaw is enough. Laughing uncontrollably is a tad too much.

OT: That is an excellent set of tables freedquaker. Thank you for making it in the first place, and for updating it.

^ only if you are older than 15...

I'm such a child.

So, uh... how about that Wii!?

 No problem, Appreciation always feels nice :)

Nice charts. What the Wii is doing is amazing. Looks like the PS3 has peformed better then the 360 when comparing there first two years. Next year will be quite interesting.

Awesome list!

I think the Xbox 360 should peak next year, I don't consider 2005 to be a full year and it wasn't until the end of 2006 when the PS3 released that I considered the generation started.