The Thailand HiT reports that sustained political commitment to the health of the population since the 1970s has resulted in significant investment in health infrastructure, in particular primary health care, district and provincial referral hospitals, and strengthened the overall functioning of the Thai health system. After Thailand achieved universal health coverage in 2002, public expenditure on health significantly increased from 63% to 77% and out-of-pocket expense was reduced from 27.2% to 12.4% of the total health spending in 2011.