China has stopped releasing youth unemployment figures, which has been seen by some as a key indication of the country's slowdown. The country's central bank also cut the cost of borrowing on Tuesday in an attempt to help boost growth. Official figures published on Tuesday showed China's overall unemployment rate had risen to 5.3% in July. The decision is due to changes in the world's second-largest economy and its society, a government spokesman said. Another issue causing major concerns about China's economy is its crisis-hit property market. In June, China's jobless rate for 16 to 24 year olds in urban areas hit a record high of more than 20%. In the latest move by authorities to boost growth the People's Bank of China unexpectedly cut key interest rates for the second time in three months.