Deep poverty, defined as the percentage of the population living on less than $1 per day, has declined significantly in Vietnam and the relative poverty rate is now less than that of China, India and the Philippines. This decline can be attributed to equitable economic policies aimed at improving living standards and preventing the rise of inequality. These policies have included egalitarian land distribution during the initial stages of the ''Đổi Mới'' program, investment in poorer remote areas, and subsidising of education and healthcare. Since the early 2000s, Vietnam has applied sequenced trade liberalisation, a two-track approach opening some sectors of the economy to international markets. Manufacturing, information technology and high-tech industries now form a large and fast-growing part of the national economy. Though Vietnam is a relative newcomer to the oil industry, it is currently the third-largest oil producer in Southeast Asia with a total 2011 output of . In 2010, Vietnam was ranked as the eighth-largest crude petroleum producer in the Asia and Pacific region. The United States purchased the highest amount of Vietnam's exports, while goods from China were the most popular Vietnamese import.