Thats hyperinflation for you. Start printing money out of nowhere and this is what happens. Fiat money will always inflate its just a matter of managing it.
Hungry still holds the record.
Hungary
Hungary went through its worst inflation in modern history in 1945-46. Before 1945, the highest denomination was 1,000 pengő. By the end of 1945, it was 10,000,000 pengő. The highest denomination in mid-1946 was 100,000,000,000,000,000,000 pengő. The rate of inflation was 4.19 quintillion (4.19 x 1018) percent. A special currency the adópengő - or tax pengő - was created for tax and postal payments [2]. The value of the adópengő was adjusted each day, by radio announcement. On January 1, 1946 one adópengő equaled one pengő. By late July, one adópengő equaled 2,000,000,000,000,000,000,000 or 2×1021pengő. When the pengo was replaced in August 1946 by the forint, the total value of all Hungarian banknotes in circulation amounted to one-thousandth of one US cent. [7] It is the most severe known incident of inflation recorded, peaking at 4.19 × 1016 percent per month (prices double every 15 hours). The overall impact of hyperinflation: On the 1st of August, 1946 400,000,000,000,000,000,000,000,000,000 or 4×1029 pengő became 1 forint.
One source [3] states that this hyperinflation was purposely started by trained Russian Marxists in order to destroy the Hungarian middle and upper classes. The 1946 currency reform changed the currency to forint. Previously, between 1922 and 1924 inflation in Hungary reached 98%.
http://en.wikipedia.org/wiki/Hyperinflation