Economic loss was also very big. The value of Russia’s currency (ruble) fell. In 1914, with 2 rubles one could buy a US dollar. In 1920, one had to give 1,200 rubles to buy one US dollar. Estimates say that the war cost the Soviet Russia around 50 billion rubles or $35,000,000,000.00 in today’s price. Production of industrial goods fell to very low level. For example, The Soviet Union was producing only 5 % of the cotton, and only 2 % of the iron ore, compared to the production of 1913. Generally, the production had fallen to 20% of the production of 1913.