年份

X₁

X₂

X₃

X₄

X₅

X₆

X₇

X₈

2010

0.4457

0.4178

0.7053

0.6558

0.7417

0.4027

0.5720

0.4883

2011

0.5401

0.5007

0.7325

0.7762

0.8290

0.5112

0.7233

0.5827

2012

0.5675

0.5345

0.7307

0.7361

0.7892

0.6582

0.6650

0.5925

2013

0.6093

0.5943

0.7346

0.7410

0.7685

0.7379

0.6627

0.6370

2014

0.7275

0.7238

0.8066

0.8010

0.8090

0.7060

0.7543

0.7420

2015

0.9588

0.9747

0.9935

0.9174

0.8996

0.9156

0.9494

0.9621

2016

0.8337

0.7978

0.9416

1.0000

0.9635

0.9044

0.8701

0.8367

2017

0.5995

0.5774

0.8385

0.8040

0.8490

0.6128

0.7533

0.6421

2018

0.4397

0.4171

0.6248

0.6036

0.6445

0.4711

0.5452

0.4642

2019

0.3589

0.3354

0.5289

0.5071

0.5542

0.3361

0.4496

0.3977