On January 1, 1893 the fourth Census in the Principality of Bulgaria began. According to the results of the largest survey in the country, the population is divided by rank and occupation. Almost ¾ of the population – 73.92%, is engaged in agriculture, 12.81% – in industry, 5.21% – in commerce and communications, 3.59% – lawyers, teachers, doctors, engineers writers, artists and others, 3.01% – army, police, administration and clergy and 1.46% – not classified. The most representatives of army and police (2.80%) and administration (2.90%) there are in the Sofia district and the biggest part of clergy (0.71%) is in the Plovdiv district.