The Chinese capital Beijing has witnessed a decline in its mobile population over the past two years after a new policy was implemented, a new publication said on Wednesday.

Under the city’s 13th Five-Year Plan, the population of Beijing should be kept at under 23 million by 2020, with the usual population of the city’s six districts 15% lower than in 2014.

However, the Beijing Blue Book: Beijing Social Development Report (2018-2019), which was jointly published by Beijing Academy of Social Sciences and Social Sciences Academic Press on June 19, stressed that it remains a challenge to stay under the 23 million cap given the natural growth of Beijing’s population and the arrival of a mobile population, Yicai.com reported.

The Blue Book also said that Beijing citizens’ satisfaction with social security protection could be enhanced if pressure on housing, healthcare and education was alleviated.

At present, overall satisfaction with housing, healthcare and education was just under 86% on average, with education ranked the highest at 85%, followed by healthcare (83%) and housing (just under 76%), thepaper.cn reported.

When asked about major problems and stressful living conditions, 53% respondents noted “poor housing conditions and their inability to afford a house”, while 42% said “unaffordably huge medical expenses”, and close to 39% said “children’s education costs are too high.”

Other concerns included their employment, family matters, or children’s education. Security concerns ranked last, which suggests that Beijing has improved and made itself a safer city.

The top three social issues for Beijing residents were traffic congestion (close to 83%), high housing prices (76%), and medical issues such as difficulty to finding a good doctor or affording the fee (70%). Other issues included the widening income gap, environmental pollutions, and education fees.

The overall safety index for Beijing citizens was nearly 90%, and the top three concerns were job safety, personal safety, personal and family property security. Medical safety, traffic safety, drug safety, and food safety received lower rankings, while the privacy of individuals was lowest at 69%.