年份

Y

X₁

X₂

X₃

X₄

X₅

X₆

X₇

X₈

2010

2.7340

0.6160

2.1285

0.8861

0.8474

2.4419

10.8417

0.8441

0.8290

2011

2.7401

0.6230

2.1191

0.8867

0.8585

2.0495

10.9652

0.8634

0.8420

2012

2.6433

0.6290

2.1106

0.9327

0.8782

1.5324

11.0202

0.9232

0.8540

2013

2.5481

0.6390

1.9725

0.9615

0.8696

2.6536

11.0838

0.9609

0.8660

2014

2.3090

0.6500

1.8790

1.0000

0.8888

2.9314

11.1356

0.9558

0.8770

2015

2.2564

0.6630

1.7793

1.0108

0.8476

2.0000

11.2020

1.0254

0.8890

2016

2.2361

0.6770

1.7321

1.0197

0.8288

2.4012

11.2694

1.1030

0.9010

2017

2.2418

0.6890

1.7644

1.0350

0.8520

2.4314

11.3576

1.1710

0.9120

2018

2.2269

0.7000

1.7556

1.1166

0.9153

2.3948

11.4428

1.2138

0.9250

2019

2.2043

0.7160

1.7567

1.2179

0.9379

2.2576

11.5005

1.2957

0.9360

2020

2.0986

0.7220

1.6793

1.4125

0.9625

2.2557

11.5191

1.3641

0.9460