Drugs by pointing out that Alberto Fujimori, president of Peru from 1990 to 2000, described U.S. foreign drug policy as "failed" on grounds that for 10 years, there has been a considerable sum invested by the Peruvian government and another sum on the part of the American government, and this has not led to a reduction in the supply of coca leaf offered for sale. Rather, in the 10 years from 1980 to 1990, it grew 10-fold. At least 500 economists, including Nobel Laureates Milton Friedman, George Akerlof and Vernon L. Smith, have noted that reducing the supply of marijuana without reducing the demand causes the price, and hence the profits of marijuana sellers, to go up, according to the laws of supply and demand. The increased profits encourage the producers to produce more drugs despite the risks, providing a theoretical explanation for why attacks on drug supply have failed to have any lasting effect. The aforementioned economists published an open letter to President George W. Bush stating "We urge...the country to commence an open and honest debate about marijuana prohibition... At a minimum, this debate will force advocates of current policy to show that prohibition has benefits sufficient to justify the cost to taxpayers, foregone tax revenues and numerous ancillary consequences that result from marijuana prohibition." The declaration from the World Forum Against Drugs, 2008 state that a balanced policy of drug abuse prevention, education, treatment, law enforcement, research, and supply reduction provides the most effective platform to reduce drug abuse and its associated harms and call on governments to consider demand reduction as one of their first priorities in the fight against drug abuse. Despite over $7 billion spent annually towards arresting and prosecuting nearly 800,000 people across the country for marijuana offenses in 2005 (FBI Uniform Crime Reports), the federally funded Monitoring the Future Survey reports about 85% of high school seniors find marijuana "easy to obtain". That figure has remained virtually unchanged since 1975, never dropping below 82.7% in three decades of national surveys. The Drug Enforcement Administration states that the number of users of marijuana in the U.S. declined between 2000 and 2005 even with many states passing new medical marijuana laws making access easier, though usage rates remain higher than they were in the 1990s according to the National Survey on Drug Use and Health. ONDCP stated in April 2011 that there has been