So the answer is, it is 16.
The original release announcement is found here: https://groups.google.com/group/comp.cad.cadence/tree/browse_frm/month/1996-11/6b17c9ab20d225c2?rnum=81&_done=%2Fgroup%2Fcomp.cad.cadence%2Fbrowse_frm%2Fmonth%2F1996-11%3F
But perhaps a better question is what do the next 16 years hold? Cross platform UI? FME on Google Glass? Support for spatially enabled video? "Think to add" transformers in the canvas? Let's see what the best answer is...