Subhead:Carney has presided over the worst first year of economic growth for any prime minister in Canada since 1963.# Canada's economy contracted during Mark Carney's first year as prime minister, according to Statistics Canada real GDP data. As the chart shows, Carney is the only prime minister since Lester Pearson in 1963 to post negative first-year economic growth. Pearson's first year delivered nearly 7% growth. Pierre Trudeau's first ter…