September 4, 2013
1 BTC = $123
September 4, 2014
1 BTC = $475
That's an increase of $352 (286%) over 1 year.
It'll be interesting to see what happens in the remaining 4 months.
I agree with DH. This year is no worse than last when we were all worried about the drop from the 250 to 100. Too early to close the books on the year. However, even if BTC ends at this level it will still be a year of consolidation. There are threats to bitcoin but it seems to keep chugging along.