The Napoleonic era (except the portion of 1799 during which he was first consul) falls within the 1800-1970 interval. So does most but not all decolonization. That's why I said 1800-1970 is a long time.The only exception to the Dutch Colonial Empire being more populous than the French would be during the Napoleonic period when the Dutch and their colonies were annexed by France, and the period after Indonesian independence in 1949 (and of course the French Empire didn't hang around much longer after that). Populations varied dramatically, but the Dutch colonial empire being one of the most populous colonial empires is pretty consistent throughout the given period.