Variable Name

Variable Symbol

Observation

Mean

Variance

Min

Max

Skill-based wage gap

w

300

1.643

0.457

0.673

2.852

Number of industrial robots

R

300

1495.517

2626.740

0.262

21,196.970

Skill-based structure of Labor supply

SHL

300

0.116

0.066

0.034

0.444

Export

exp

300

0.166

0.188

0.015

0.898

Foreign direct investment

fdi

300

0.397

0.540

0.047

5.708

GDP per capita

pgdp

300

3.123

1.898

0.593

10.359

Industrial structure

lnst

300

0.856

20.823

0.261

2.635

Population structure

(aging situation)

old

300

0.134

5.281

0.072

0.162

Proportion of state-owned economy

mon

300

0.384

0.183

0.101

0.834

Fixed asset investment

gdk

300

0.675

0.209

0.253

1.328