Instructions: In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.
Input: Article: Chinese police arrested around 8,500 suspects in more than 4,500 environment-related criminal cases in 2014, as the country waged war against pollution, the leader of the Chinese environment authorities, Chen said. Environmental authorities handed more than 2,000 cases of suspected environmental law violations to the police, more than double the figure for the past 10 years combined. Close to 3,400 companies and 3,700 construction sites were also found to have violated environment laws and more than 3,100 workshops were closed following air quality inspections by Ministry of Environmental Protection ( MEP) officials and drones , Chen said. The announcement came as a result of long lasting heavy smog in Beijing and the neighboring Tianjin and Hebei province for the better part of a week. The next step is to further optimize the country's industry, and energy structure and cut back one missions of air pollutants, Chen said. Authorities will go on cutting back on outdated factories this year, shut down l,000 small coal mines, improve the quality of coal on the market, guarantee stable supply of natural gas, and promote the use of clean energy and energy-saving buildings. Chen said efforts will also be made to improve the evaluation of governments' carrying out of air pollution control measures, deepen regional cooperation, step up technological research and sharpen laws and regulations in the field, to make polluters nay the "unaffordable price". Chen said environmental authorities would "bring new tools introduced in the law into full play, conduct more secret inspections and seek heavier punishment for companies guilty of illegal emissions and those which deliberately change pollution data. " Government officials who overlook their duties or abuse their power will be examined in line with law, he said.
Answer: About 100.
Output:
How many cases were handed to the police by environmental authorities each year in the past 10 years?