As per the 2006–2007 census by SIDBI, there are 14,68,104 micro, small and medium enterprises in Kerala employing 30,31,272 people.[139][140] The KSIDC has promoted more than 650 medium and large manufacturing firms in Kerala, creating employment for 72,500 people.[141] A mining sector of 0.3% of GSDP involves extraction of ilmenite, kaolin, bauxite, silica, quartz, rutile, zircon, and sillimanite.[110] Other major sectors are tourism, medical sector, educational sector, banking, ship building, oil refinery, infrastructure, manufacturing, home gardens, animal husbandry and business process outsourcing.