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Table 13 Social security coverage rate of four cities from 2016 to 2023 (Unit: %)

From: Prediction of population aging trend and analysis of influencing factors based on grey fractional-order and grey relational models: a case study of Jiangsu Province, China

Year

2016

2017

2018

2019

2020

2021

2022

2023

Nanjing

45.79

45.41

45.54

45.89

46.72

50.83

51.08

50.61

Suzhou

76.77

79.39

81.85

80.48

80.32

81.32

80.51

78.93

Nantong

28.15

28.51

29.95

31.59

22.97

23.66

24.15

24.47

Xuzhou

14.92

17.50

18.58

19.78

20.60

19.00

19.72

20.08

  1. The Social Security Coverage Rate is measured by the proportion of urban workers insured by basic old-age insurance to the total registered population
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