At the 2003 Durban World Parks Congress he pledged to more than triple protected natural areas on the island from to – ten per cent of the country's land surface – over five years. In 2004 he established BIANCO ("Bureau Indépendant Anti-Corruption"), an anti-corruption bureau, which resulted in reduced corruption among Antananarivo's lower-level bureaucrats in particular, although high-level officials have not been prosecuted by the bureau. That same year, the International Monetary Fund agreed to write off half Madagascar's debt. Having met a set of stringent economic, governance and human rights criteria, in 2005 Madagascar became the first country to benefit from the Millennium Challenge Account, a new development fund managed by the United States. Legal reforms strengthened state institutions, particularly the judiciary, and produced improvements in human rights, civil liberties and the business climate. Consequently, the economy grew at an average annual rate of seven per cent throughout his presidency. Under his administration, hundreds of kilometers of roads were paved in formerly isolated rural areas. Dramatic improvements in education and health were also achieved under his administration. During Ravalomanana's first term, thousands of new primary schools and additional classrooms were constructed, older buildings were renovated and tens of thousands of new primary teachers were recruited and trained. Primary school fees were eliminated and kits containing basic school supplies were distributed to primary students. Logging in protected areas was outlawed until January 2009.