I think we're seeing a bit of a systemic issue here.
With 3 choices from 36 numbers, each ticket has a 1 in 7140 chance of winning. When multiple people play, the chances of there being a winner each month obviously comes down, so it's all about the volume of players.
If 10,000 (!) tickets were sold each month, by month 3 there'd be an almost 99% chance of having a winner. Something more realistic for us, 800 tickets per month, means that after an entire year there's still only a 74% chance of anyone having won the jackpot at all.
Or to sum up, with a smaller fanbase such as ours, this scheme is destined to have many, many rollovers. Nice for the person who eventually wins it, but it does give the monthly announcements a bit of a groundhog day feel.