History of Switzerland
Switzerland's most important exports during the war were precision machine tools, watches, jewel bearings (used in bombsights), electricity, and dairy products. During World War Two, the Swiss franc was the only remaining major freely convertible currency in the world, and both the Allies and the Germans sold large amounts of gold to the Swiss National Bank. Between 1940 and 1945, the German Reichsbank sold 1.3 billion francs worth of gold to Swiss Banks in exchange for Swiss francs and other foreign currency.
Federal budget of Switzerland
The budget principles are defined by the Swiss Constitution and have been restated most recently in the 1999 fiscal guidelines of the confederation. In 2010 the federal budget of Switzerland had a size of 62.8 billion Swiss francs, which is an equivalent 11.35% of the country's GDP in that year. In 2014 the federal budget of Switzerland had an estimated size of 66.353 billion Swiss francs, which is an estimated equivalent 10.63% of the country's GDP in that year.
Note that the Swiss "federal" budget only comprises 31.7% of Swiss public expenditure, the rest being managed by the cantons and the municipalities directly.