so this represents around 0.6%. Further, CBO estimated that unspent balances would grow from $7.1 billion in 2005 to $25.4 billion by 2008. The law's effect goes far beyond the minor budget impact, however. The Brookings Institution reported in 2006 that: "With its emphasis on work, time limits, and sanctions against states that did not place a large fraction of its caseload in work programs and against individuals who refused to meet state work requirements, TANF was a historic reversal of the entitlement welfare represented by AFDC. If the 1996 reforms had their intended effect of reducing welfare dependency, a leading indicator of success would be a declining welfare caseload. TANF administrative data reported by states to the federal government show that caseloads began declining in the spring of 1994 and fell even more rapidly after the federal legislation was enacted in 1996. Between 1994 and 2005, the caseload declined about 60 percent. The number of families receiving cash welfare is now the lowest it has been since 1969, and the percentage of children on welfare is lower than it has been since 1966." The effects were particularly significant on single mothers; the portion of employed single mothers grew from 58% in 1993 to 75% by 2000. Employment among never-married mothers increased from 44% to 66%. The report concluded that: "The pattern is clear: earnings up, welfare down. This is the very definition of reducing welfare dependency." Trade Clinton made it one of his goals as president to pass trade legislation that lowered the barriers to trade with other nations. He broke with many of his supporters, including labor unions, and those in his own party to support free-trade legislation. Opponents argued that lowering tariffs and relaxing rules on imports would cost American jobs because people would buy cheaper products from other countries. Clinton countered that free trade would help America because it would allow the U.S. to boost its exports and grow the economy. Clinton also believed that free trade could help move foreign nations to economic and political reform. The Clinton administration negotiated a total of about 300 trade agreements with other countries. Clinton's last treasury secretary, Lawrence Summers, stated that the lowered tariffs that resulted from Clinton's trade policies, which reduced prices to consumers and kept inflation low, were technically "the largest tax cut in the history of the world." NAFTA The North American Free Trade Agreement