Nearly one in every five Chinese people were rural migrant workers - those from rural areas working in cities - by the end of last year, official statistics showed on Friday. The number of rural migrant workers increased 3.9 percent to 262.61 million by the end of 2012, accounting for 19.39 percent of the country's total population, the National Bureau of Statistics said in a report on China's development. In breakdown, rural workers employed outside their hometowns rose 3 percent from a year ago to 163.36 million in 2012, while those employed in their hometowns rose 5.4 percent to 99.25 million, the report said.