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s.? Develop new sources to instead of oil.? By reducing the cost of others to offset the rising oil prices which brought the costs rising.? The fundamental reasons is the international market rise in food prices contributed to the domestic market rise in food prices.? The direct cause of last year is that the pig of low prices and the epidemic exists in pigs ,under these two dual elements, it caused the reduction of the number of pig market.? On the demand side, as people living standard rises and the population of migrant workers increase, it happens that demand exceeds supply。 Consumer Price Index. An inflationary indicator that measures the change in the cost of a fixed basket of products and services, including housing, electricity, food, and transportation. The CPI is published monthly. also called costofliving index. The overall general upward price of goods and services in an economy (often caused by a increase in the supply of money), usually as measured by the Consumer Price Index and the Producer Price Index. Over time, as the cost of goods and services increase, the value of a dollar is going to fall because a person won39。 Gross Domestic Product. The total market value of all final goods and services produced in a country in a given year, equal to total consumer, investment and government spending, plus the value of exports, minus the value of imports. The GDP report is released at 8:30 am EST on the last day of each quarter and reflects the previous quarter. Growth in GDP is what matters, and the . GDP growth has historically averaged about % per year but with substantial deviations. Each initial GDP report will be revised twice before the final figure is settled upon: the advance report is followed by the preliminary report about a month later and a final report a month after that. produced by . firms operating in foreign countries. Significant revisions to the advance number can cause additional ripples through the markets. The GDP numbers are reported in two forms: current dollar and constant dollar. Current dollar GDP is calculated using today‘s dollars and makes parisons between time periods difficult because of the effects of inflation. Constant dollar GDP solves this problem by converting the current information into some standard era dollar, such as 1997 dollars. This process factors out the effects of inflation and allows easy parisons between periods. It is important to differentiate