以下两组数取对数后做单位根检验和因果检验
      
GDP

   


     




TAX

9016

2040.79

9814.223512

2221.469521

10949.86938

2478.52528

12183.65747

2757.795734

12679.04209

2869.927053

13165.07983

2979.942686

14375.50073

3253.923927

16422.46734

3717.258999

18712.45283

4235.601887

21161.33527

4789.911424

23474.68795

5313.543526

25825.42816

5845.638368

28222.90276

6388.311637

30433.43977

6888.6712

32756.13933

7414.418987

35513.4688

8038.546138

38462.40929

8706.044837

41958.14224

9497.311124

46164.23803

10449.36949

50818.98403

11502.98075

56567.31495

12804.12718

63736.37155

14426.85778

72765.45718

16470.60973

79775.61684

18057.37368

87126.93759

19721.36013

96226.12482

21780.97973

105175.762

23806.74837

113223.4253

25628.35337

121911.3498

27594.88282