Expenditure on primary, secondary and post-secondary non-tertiary education was 2.5% of the GDP in 2010, lower than the OECD average of 3.9%, but it has increased by 0.7 percentage points since 2000. In 2010, public expenditure on public educational institutions per student in primary education, secondary and postsecondary non-tertiary education was USD 2 008 (compared to the OECD average of USD 8 412), while for private institutions it was USD 2 413 (compared to the OECD average of USD 5 029). School funding is allocated based on an increase over the previous year's school budget.