Small countires with small budgets can do great jobs - let's look over the Tasman to wee New Zealand.
Fatal accidents for all types of aviation are investigated and reports published online for all to read and learn from any location on this planet - many of these aircraft types are worldwide, common types, common concerns, common errors - earning doesn't need to be confined to one national boundary.
Here you will find gyros, gliders, helicopters, GA, ultralights - take a look at an example - excellent reports in the public domain- congrats to NZ CAA
http://www.caa.govt.nz/safety_info/fatal_accident_reports.htm
More minor incidents are given brief summaries
http://www.caa.govt.nz/Script/Accident_List.asp
NZ has less aircraft than Australia, but also less population and therefore less tax revenue - so with limited resources a quality service can be provided. The UK and the US have similar reporting in the public domain as NZ.
Unfortunately incidents and accdients of light aviation types overseen by RAAus and ASRA are not in the public domain, so little is learnt or shared - who knows if the trend is up or down.
Regards
Steve