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.
In 2009, what size did the data saved by Wayback Machine reach?
{'text': 'three petabytes', 'answer_start': 64}