 In October 2009, the US scored 66.1/100.2010 – The concept was taken seriously, as the Centre for Bhutan Studies, under the leadership of Karma Ura, developed a sophisticated survey instrument to measure the population's general level of well-being.Two Canadians, Michael and Martha Pennock played a major role in developing the Bhutanese survey, which took a six- to seven-hour interview to complete.