The severe inflationary pressures that characterized the early years of independence inevitably led to a dramatic depreciation of the national currency. The exchange rate of Uzbekistan's first currency, the "notional" ruble inherited from the Soviet period and its successor, the transient "coupon som" introduced in November 1993 in a ratio of 1:1 to the ruble, went up from 100 rubles/US$ in the early 1992 to 3627 rubles (or coupon soms) in mid-April 1994. On July 1, 1994 the "coupon soʻm" was replaced with the permanent new Uzbek soʻm (UZS) in a ratio of 1000:1, and the starting exchange rate for the new national currency was set at 7 som/US$, implying an almost two-fold depreciation since mid-April. Within the first six months, between July and December 1994, the national currency depreciated further to 25 som/US$ and continued depreciating at a fast clip until December 2002, when the exchange rate had reached 969 som/US$, i.e., 138 times the starting exchange rate eight and a half years earlier or nearly 10,000 times the exchange rate in early 1992, soon after the declaration of independence. Then the depreciation of the som virtually stopped in response to the government's stabilization program, which at the same time dramatically reduced the inflation rates. During the four years that followed (2003–2007) the exchange rate of the som to the US dollar increased only by a factor of 1.33, from 969 som to around 1865 som in May 2012.