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Table 22 Panel data of social security coverage rate after initialization

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

3.07

3.04

3.05

3.08

3.13

3.41

3.42

3.39

Suzhou

5.15

5.32

5.49

5.39

5.38

5.45

5.40

5.29

Nantong

1.89

1.91

2.01

2.12

1.54

1.59

1.62

1.64

Xuzhou

1.00

1.17

1.25

1.33

1.38

1.27

1.32

1.35