To answer the first question, I think recent reforms would usually have to be within the last 5 (maybe 10) years. It is okay to use older reforms if the question doesn't specify recent reform as micro-reform has long term impacts, therefore things such as the introduction of super and reduction of protectionist policy in the 90s still are impacting on the economy.
In terms of recent reforms, there have been reforms such as the NDIS, recent free trade agreements, Youth Jobs PaTH program, infrastructure building. Just look at discretionary change in the budget. There are many others, but one issue with the economy is that our most significant reforms occurred in the 90s and there hasn't been many significant changes since (which may be something you want to mention).
Hope that helps a bit.