Close to 5 years, around 78 because of the market drops. Saw it around 92 (I think) earlier this year. Between 6% (with 6% match) and 12% (split pre and post tax) over the years. Currently back down to 6% pre, but I'll be bumping it up again next year if I stay at this company. My allocation is very aggressive being nearly 100% in stocks, but that's risk I'm willing to take.