As of 2009[update], the Wayback Machine contained approximately three petabytes of data and was growing at a rate of 100 terabytes each month; the growth rate reported in 2003 was 12 terabytes/month. The data is stored on PetaBox rack systems manufactured by Capricorn Technologies.
As of 2003, what was the rate of increase in the amount of data recorded by rate systems?
{'text': '12 terabytes/month', 'answer_start': 180}