The 500 million max supply was set for the life of the coin (100 years may be?), but that is ridiculous amount because with the first year 20% increase, it only adds 6 million to the 30 million in circulation.

So here is the breakdown:

first year 30 million + 20% = 36 million
second year 36 million + 15% =  41.4 million
third year 41.4 million + 10% = 45.5 million
4th and subsequent years +5% = 47.8 million

This is what I mean by low supply definitely not the 500 million!