Efforts in 2014 by Jizhong Energy Company to reduce pollution in the city of Xingtai, population 7.6 million, by closing down the worst polluting plants and installing new equipment. The World Bank put the cost of pollution, including cancer and other health problems, at 9% of gross national income in 2009. The Ministry of Environmental Protection estimates 3.5% of GDP as the cost of pollution in 2010. Xingtai's pollution levels have been recorded by air quality monitors at as high as 30 times China's national standard. Government figures show the PM2.5 in the city's air is 150 micrograms per cubic meter over the last 12 months, more than 4 times the national standard. To get some idea what this means, consider that Fresno, California, with the highest pollution level in the U.S. had PM2.5 level of 18 micrograms per cubic meter. To show it is serious the central government requires the city to post pollution figures online, down to individual smokestacks and exhaust ports.