increase of 4.4 per cent. The proportion of electricity consumption of primary, secondary, tertiary industry and urban and rural residents in the whole society was 0.8%, 79.6%, 11.4% and 8.2%, respectively. Social security By the end of 2017, 310900 people in Yangquan City had participated in basic old-age insurance for urban workers, an increase of 22300 over the previous year, and 440900 had participated in old-age insurance for urban and rural residents, an increase of 300 over the previous year. 386000 urban workers participated in basic medical insurance, 815600 urban and rural residents participated in basic medical insurance, 260000 participated in industrial injury insurance, an increase of 2200 over the previous year, and 251200 participated in unemployment insurance, the same as the previous year. 246700 people participated in maternity insurance, an increase of 900 over the previous year. The minimum wage for three districts and two counties in the city is 1700 yuan in urban areas, mining areas and suburbs, and 1500 yuan in Pingding County and Yu County, an increase of 80 yuan over the previous year. In 2017, Yangquan City had a total of 34300 urban minimum living security objects, a decrease of 999 over the previous year, and 40800 rural minimum living security objects, an increase of 217 over the previous year, and 6300 people were included in the five guarantees in rural areas. A total of 245 million yuan of minimum guaranteed funds were disbursed throughout the year, an increase of 24 million yuan over the previous year. By the end of 2017, there were three rescue stations in Yangquan. A total of 28 social service institutions provide accommodation, the number of beds in old-age service institutions is 1995, the number of beds in various welfare homes is 350, and the number of adoptions is 102. There are 576 community service facilities in cities and towns, including 90 comprehensive community service centers. In the whole year, 199 million yuan of welfare lottery tickets were sold and 100000 yuan of donations were received from the community. Transportation In 2017, the added value of transportation, warehousing and postal services in Yangquan reached 5 billion yuan, an increase of 12.1 per cent. The mileage of highway lines is 5660.4 km at the end of the year, an increase of 2.2 km over the end of last year. For the whole year, the railway freight volume was 44.971 million tons,