extensive damage in the capital, Port Vila, and surrounding areas, and was also followed by a tsunami. Another earthquake of 7.2 struck on 2 August 2007. The Vanuatu National Statistics Office (VNSO) released their 2007 agricultural census in 2008. According to the study, agricultural exports make up about three-quarters (73%) of all exports; 80% of the population lives in rural areas where "agriculture is the main source of their livelihood"; and of these households, almost all (99%) engaged in agriculture, fisheries and forestry. Total annual household income was 1,803 million vatu. Of this income, agriculture grown for their own household use was valued at 683 million vatu, agriculture for sale at 561, gifts received at 38, handicrafts at 33 and fisheries (for sale) at 18. The largest expenditure by households was food (300 million vatu), followed by household appliances and other necessities (79 million vatu), transportation (59), education and services (56), housing (50), alcohol and tobacco (39), clothing and footwear (17). Exports were valued at 3,038 million vatu, and included copra (485), kava (442), cocoa (221), beef (fresh and chilled) (180), timber (80) and fish (live fish, aquarium, shell, button) (28). Total imports of 20,472 million vatu included industrial materials (4,261), food and drink (3,984), machinery (3,087), consumer goods (2,767), transport equipment (2,125), fuels and lubricants (187) and other imports (4,060). There are substantial numbers of crop gardens – 97,888 in 2007 – many on flat land (62%), slightly hilly slope (31%), and even on steep slopes (7%); there were 33,570 households with at least one crop garden, and of these, 10,788 households sold some of these crops over a twelve-month period. The economy grew about 6% in the early 2000s. This is higher than in the 1990s, when GDP rose less than 3%, on average. One report from the Manila-based Asian Development Bank about Vanuatu's economy gave mixed reviews. It noted the economy was "expanding", noting that the economy grew at an impressive 5.9% rate from 2003 to 2007, and lauded "positive signals regarding reform initiatives from the government in some areas" but described certain binding constraints such as "poor infrastructure services". Since a private monopoly generates power, "electricity costs are among the highest in the Pacific" among developing countries. The report also cited "weak governance and intrusive interventions by the State" that reduced productivity. Vanuatu was ranked the 173rd safest investment destination in the world in the March