explain the concept of deficit in balance of payments
Balance of payments Under a fixed exchange rate system, the central bank accommodates those flows by buying up any net inflow of funds into the country or by providing foreign currency funds to the foreign exchange market to match any international outflow of funds, thus preventing the funds flows from affecting the exchange rate between the country's currency and other currencies. Then the net change per year in the central bank's foreign exchange reserves is sometimes called the balance of payments surplus or deficit. Alternatives to a fixed exchange rate system include a managed float where some changes of exchange rates are allowed, or at the other extreme a purely floating exchange rate (also known as a purely flexible exchange rate). With a pure float the central bank does not intervene at all to protect or devalue its currency, allowing the rate to be set by the market, and the central bank's foreign exchange reserves do not change, and the balance of payments is always zero.
History of the United States public debt According to the Congressional Budget Office, the United States last had a budget surplus during fiscal year 2001. From fiscal years 2001 to 2009, spending increased by 6.5% of gross domestic product (from 18.2% to 24.7%) while taxes declined by 4.7% of GDP (from 19.5% to 14.8%). Spending increases (expressed as percentage of GDP) were in the following areas: Medicare and Medicaid (1.7%), defense (1.6%), income security such as unemployment benefits and food stamps (1.4%), Social Security (0.6%) and all other categories (1.2%). Revenue reductions were individual income taxes (−3.3%), payroll taxes (−0.5%), corporate income taxes (−0.5%) and other (−0.4%).