Last year, labour market economist John Philpott found that more than one in five workers, around 7.1 million people, were in precarious employment, up from 5.3 million in 2006. The API said gasoline stocks rose by 200.10 million barrels last week, an increase of 2231, 000 barrels. Refining inventories fell by 2.58 million barrels last week, or 13.27 million barrels. In his theory, money supply is controlled by the central bank and is an exogenous variable with no interest rate elasticity. At this point, monetary demand depends on people's psychological "liquidity preference". According to the carrying capacity, there are minivans (under 1.8 tons), light trucks (1.8-6 tons), medium goods vehicles (6-14 tons) and heavy trucks (over 14 tons). Ms lagarde said she recently to Britain and the European Union in the civil rights, Northern Ireland and financial settlement negotiations welcome breakthrough, but said, the final agreement was established to minimize the trade barriers, and to provide enough time to implement change.