In 2008, there were 61,929 assisted reproductive technology (ART) treatment cycles undertaken in Australia and New Zealand. Of these cycles, 17.2% resulted in a live delivery (the birth of at least one liveborn baby). In total, 11,528 liveborn babies were born following ART treatment undertaken in 2008. The most important trend in ART treatment has been the increase of single embryo transfer, from 40.5% in 2004 to 67.8% in 2008. This trend has resulted in significant reduction of multiple delivery rate, from 16.4% in 2004 to 8.4% in 2008.