Raising cattle leads to beef production for export. One estimate in 2007 for the total value of cattle heads sold was 135 million vatu; cattle were first introduced into the area from Australia by British planter James Paddon. On average, each household has 5 pigs and 16 chickens, and while cattle are the "most important livestock", pigs and chickens are important for subsistence agriculture as well as playing a significant role in ceremonies and customs (especially pigs). There are 30 commercial farms (sole proprietorships (37%), partnerships (23%), corporations (17%)), with revenues of 533 million vatu and expenses of 329 million vatu in 2007.