Table 1. Distribution of turnovers of local officials during 2010–2020.

Year	Number of samples	Mayor turnover (%)	Party sectary turnover (%)
2010	1843	27.3%	19.0%
2011	2149	31.9%	30.4%
2012	2350	22.0%	15.2%
2013	2333	32.3%	21.0%
2014	2358	13.7%	13.9%
2015	2539	28.6%	27.8%
2016	2758	35.0%	35.9%
2017	3197	31.2%	32.7%
2018	3473	27.8%	30.6%
2019	3624	22.0%	24.0%
2020	4003	14.1%	13.0%
Total	30627	25.5%	24.1%