Year

D₁(x)

Z₁(y)

C

D

Type

Coupling phase

2006

0.1933

0.3388

0.9619

0.4919

near-inharmonious recession

moderate coupling

2007

0.1667

0.3518

0.9341

0.4742

near-inharmonious recession

moderate coupling

2008

0.3191

0.2027

0.9748

0.5154

near-coordinated development

moderate coupling

2009

0.3846

0.2119

0.9571

0.5496

near-coordinated development

moderate coupling

2010

0.2725

0.2825

0.9998

0.5258

near-coordinated development

moderate coupling

2011

0.2113

0.3831

0.9573

0.5178

near-coordinated development

moderate coupling

2012

0.2094

0.4952

0.9140

0.5439

near-coordinated development

moderate coupling

2013

0.1661

0.5312

0.8520

0.5157

near-coordinated development

moderate coupling

2014

0.0906

0.5979

0.6761

0.4455

near-inharmonious recession

moderate coupling

2015

0.0102

0.6439

0.2483

0.2559

moderate coordinated development

low level coupling

2016

0.0252

0.5055

0.4256

0.3041

mild coordinated development

moderate coupling

2017

1.0000

0.5451

0.9557

0.8842

good coordinated development

high level coupling