The state of the economy is particularly uncertain at the moment. The pace of economic growth slowed in 2007, and there are strong indications that it will slacken further in 2008. In CBO's view, the ongoing problems in the housing and financial markets and the high price of oil will curb spending by households and businesses this year and trim the growth of GDP. Although recent data suggest that the probability of a recession in 2008 has increased, CBO does not expect the slowdown in economic growth to be large enough to register as a recession. Economic performance worse than that suggested in CBO's forecast could significantly decrease projected revenues and increase projected spending. Furthermore, policy changes intended to mitigate the economic slowdown would, by design, tend to increase the budget deficit in the short term. CBO expects the economy to rebound after 2008, as the negative effects of the turmoil in the housing and financial markets fade. Under the assumptions that govern CBO's baseline, the budget deficit will amount to 1.5 percent of GDP or less each year from 2009 to 2011. Subsequently, the budget will show a small surplus of 0.5 percent of GDP in 2012 and remain near that level each year through 2018 (the end of the current 10-year projection period). CBO's baseline budget projections for the next 10 years are not a forecast of future outcomes; rather, they are based on the assumption that current laws and policies remain the same. The projections stem from longstanding procedures that were, until recently, specified in law, and they serve as a benchmark that lawmakers and others can use to assess the potential impact of future policy decisions.