https://blockchain.info/charts/n-transactions?timespan=all&s...
It seems to be increasing. Given that using BTC isn't useful unless someone else uses BTC (like email), the growth is impressive to me. I remember when the number of people I knew that had email addresses was very limited. It took about 10 years between me and my mother getting one.
https://blockchain.info/charts/n-transactions-excluding-popu...
Looks like there is about 10k transactions to popular addresses per day.
https://blockchain.info/charts/n-transactions-excluding-chai...
Chain transactions can't be completely discounted but as of yet no one has come up with their actual purpose and they really don't make sense other that inflating the transaction count. Once you subtract the above 10k to popular addresses that leaves you with about 20-25k actual transactions per day.