I decided to compile all the UFC fights into a single dataset, though there's a bit of missing data (usually the time that a fight ends). I'm still messing around with everything and thought I'd share some initial results. Here's a breakdown (by percentage) of how UFC fights have ended since 1993.

Submission TKO KO Decision Draw No Contest Number of Fights 1993 62.5 37.5 0 0 0 0 8 1994 75 12.5 12.5 0 0 0 32 1995 60 22.5 5 7.5 5 0 40 1996 46.5 32.6 9.3 11.6 0 0 41 1997 41.5 34.1 2.4 19.5 2.4 0 43 1998 32 24 12 32 0 0 25 1999 20.5 40.9 13.6 20.4 4.5 0 44 2000 31.0 21.4 7.1 38.1 2.4 0 42 2001 25.6 20.5 20.5 30.8 0 2.6 39 2002 18.9 43.4 7.5 28.3 0 1.9 53 2003 20 35 10 30 5 0 40 2004 30.8 17.9 25.6 25.6 0 0 39 2005 27.5 32.5 15 23.8 0 1.3 80 2006 31.4 22.4 12.8 33.3 0 0 156 2007 32.4 22.4 8.2 35.9 0.6 0.6 170 2008 26.9 31.8 9.5 31.8 0 0 201 2009 23.5 25.8 7.5 42.7 0.5 0 213 2010 22.1 25.7 6.6 44.9 0.7 0 136

You'll notice that the number of fights have increased dramatically in recent years. From only 80 fights five years ago, we've already seen 136 fights in 2010... and we're only halfway through the year.

The other thing you might notice is the 10-15% increase in decisions over the last two years. However, you should keep in mind that this number represents all UFC fights, not just the ones that have been televised. I hope to eventually put together the data so that I can break down results by televised card (which may drive these numbers up or down).

Two quick notes. (1) Data is from Sherdog Fight Finder. (2) Number may not add up to 100 due to rounding error but should be very close.