The first is the comparability of the measures of GDP and labour inputs that the statistical agency in each country produces. [...] The first is the comparability of the measures of GDP and labour inputs that the statistical agency of each country produces. [...] Professional economists have provided a rather wide range of estimates in describing the relative performance of the Canadian economy compared to the United States as of the end of the 1990s. [...] That is, the aggregate measure of relative productivity growth is just a weighted average of the relative productivity growth in the business sector and in the government sector, where the latter is equal to zero by construction. [...] The valuation of output in the industry and input-output accounts of the U. S. is higher than that of the Canadian estimate that uses its modified version of basic prices by the amount of taxes on products.