History of Latvia forests were another export revenue source. On March 27, 1919 the Latvian rublis was introduced with an exchange rate of 1 Latvian rublis equal to 1 ostruble, 2 German marks and 1,5 czar rubles. On March 18, 1920 Latvian rublis was made the only legal currency. Due to high inflation, the new Latvian lats currency was introduced at a rate 1 lat to 50 rublis. In 1923 the Bank of Latvia was established and lats replaced rublis in 1925. Between 1923 and 1930 state budget was with a surplus. On average 25,5% went to defense, 11,2% to education and 23,4%
Currency intervention manipulations. As the financial crisis of 2007–08 hit Switzerland, the Swiss franc appreciated "owing to a flight to safety and to the repayment of Swiss franc liabilities funding carry trades in high yielding currencies." On March 12, 2009, the Swiss National Bank (SNB) announced that it intended to buy foreign exchange to prevent the Swiss franc from further appreciation. Affected by the SNB purchase of euros and US dollars, the Swiss franc weakened from 1.48 against the euro to 1.52 in a single day. At the end of 2009, the currency risk seemed to be solved; the SNB changed its