Approximate annual inflation rates since Jan/2014:
Euro Area (Euro) 1%
USA (Dollar) 1.6 %
China (Yuan) 2%
Brazil (Real) 6.5%
Argentina (Peso) 11%
Venezuela (Bolívar) 54%
Bitcoinland (Bitcoin) 350%

How 'bout a 2 year average? That would give quite the different picture

.
Honestly though, it would be more fair to look at monetary inflation (in which bitcoin is still quite inflationary at present, admittedly).