Austria was among the countries that began to develop modern industry at the turn of the eighteenth century and in particular during the Continental Blockade. Cotton spinning was mechanized and construction of textile machinery began. Similarly, when in the late 1820's horse-drawn railroads were constructed on the European Continent, Austria was among the pioneers. This onset of modern economic growth followed a long tradition of handicraft and manu-factories in several regions of the Habsburg domain. Notwithstanding these early beginnings, in 1900 about 58 percent of the economically active population was still engaged in agriculture, as against 22 percent in industry. According to estimates based on Colin Clark's figures Austrian national product per head of the “working population” was in 1913 about 47 percent of the corresponding British product, almost 60 percent of the German, and above 70 percent of the French. Population growth throughout most of the nineteenth century was rather steady, at an average annual rate of below 1 percent. When at the turn of the century the rate increased, Austria became one of the major sources of European emigration.