The lowest temperature ever recorded was on 20 January 1892. London has a number of parks. Victoria Park in downtown London is a major centre of community events, attracting an estimated 1 million visitors per year. Other major parks include Harris Park, Gibbons Park, Fanshawe Conservation Area (Fanshawe Pioneer Village), Springbank Park, and Westminster Ponds. The city also maintains a number of gardens and conservatories. The percentage of the resident population in London of retirement age (65 and over) is 16.6, just under Canada's 16.9. The median age is 39.7 years of age, compared to 41.2 for all of Canada. As per the 2016 census, the most common ethnicities in London, Ontario are English (28.4%), Canadian (25.8%), Scottish (20.9%), Irish (19.8%), German (11.6%), French (9.6%), Dutch (6.3%), Italian (5.0%), Polish (4.4%), and British Isles Origins, n.i.e. (3.4%). Visible minorities make up 16% of London's population and include Arab (2.8%), Black (2.5%), South Asian (2.4%), and Chinese (2.2%), in addition to 2.4% Aboriginal population. According to the 2011 census, the majority of Londoners profess a Christian faith, which accounts for 62.8 percent of the population (Roman Catholic: 27.0%, Protestant: 25.0%, other Christian: 9.0%). Other religions include Islam (4.4%), Buddhism (0.8%), Hinduism (0.8%), and Judaism (0.5%), with 29.9 percent of the population reporting no religious affiliation. London's economy is dominated by medical research, insurance, manufacturing, and information technology. Much of the life sciences and biotechnology-related research is conducted or supported by the University of Western Ontario, which adds about C$1.5 billion to the London economy annually. Since the economic crisis of 2009, which gutted many of London's manufacturing jobs, the city has transitioned to become a technology hub with a focus on the Digital Creative sector. As of 2016, London is home to 300 technology companies that employ 3% of the city's labour force. Many of these companies have moved into former factories and industrial spaces in and around the downtown core, and have renovated them as modern offices. For example, Info-Tech Research Group's London office is in a hosiery factory, and Arcane Digital moved into a 1930s industrial building in 2015.