how many Canadians identify as LGBT. A separate data program, the Canadian Community Health Survey, showed in 2015 that 1.7 per cent of respondents identified as gay or lesbian and 1.3 per cent identified as bisexual. However, the Health Survey is not the same thing as the census, and it is not a universal survey of all Canadians but only a self-selected voluntary survey filled out by active users of specific health services. Because same-sex marriage has been legal in Canada since the passage of the Civil Marriage Act in 2005, census figures are published for same-sex couples. The Canada 2006 Census recorded approximately 7,500 same-sex marriages nationwide, while the Canada 2011 Census listed 21,000. However, the 2011 data only included couples living in major cities; some additional data on same-sex couples in smaller communities was withheld from publication after Statistics Canada determined that due to data tabulation errors, as many as 4,500 pairs of platonic roommates may have been incorrectly counted as additional same-sex couples. This error primarily seemed to affect smaller natural resource communities, such as development sites in the Alberta oil sands, where some people reported themselves as both married and living with a person of the same sex, but may in fact have been migrant workers, who weren't married to the same person with whom they were sharing accommodation on the census date. Festivities Pride parades have been held in various cities throughout Canada since the events of Pride Week 1973 and have also become larger in attendance, as legal and cultural attitudes towards LGBT citizens in Canada are relaxed. The largest current pride event, Pride Week in Toronto, was launched in 1981 following that year's Operation Soap by Toronto Metropolitan Police; the bathhouse raid and reaction by LGBT people is considered the Canadian equivalent of the 1969 Stonewall riots in New York City. Edmonton Pride also evolved from the protests against a 1981 bathhouse raid in Edmonton, Alberta, although that event did not add a parade until the early 1990s. Many other Canadian cities, both large and small, have since launched annual pride events, with the largest and most prominent festivities taking place in Toronto, Calgary (Calgary Pride), Ottawa (Capital Pride), Montreal (Fierté Montréal), Halifax (Halifax Pride), and Vancouver (Vancouver Pride). Toronto acted as host city for the international WorldPride in 2014. As of 2017, at least one annual pride event takes place in every