年份

y

X1

X2

X3

X4

X5

X6

2000

10.2335

14716

45326

39734

0.7902

1.4729

69.00

2001

9.5063

15501

49262

45507

0.8670

1.4106

69.30

2002

9.1967

16189

53624

51189

0.9450

1.4014

69.00

2003

9.3851

16968

62121

57476

1.0600

1.4431

69.40

2004

9.2673

20902

73530

66283

1.2400

1.4329

70.90

2005

8.8758

21804

87127

76965

1.4259

1.4060

71.60

2006

8.3349

23313

103164

91180

1.6602

1.3161

71.20

2007

7.3881

27783

125145

115091

2.0337

1.1620

70.80

2008

6.5439

32747

148098

135907

2.3912

1.0122

71.60

2009

6.3243

34154

157850

153625

2.5963

0.9725

72.00

2010

6.2895

39355

188805

180743

3.0567

0.8820

72.80

2011

5.7388

46153

223390

214580

3.6018

0.7995

72.30

2012

5.4279

50893

240200

243030

3.9544

0.7529

72.40

2013

5.1350

55322

256810

275887

4.3320

0.7090

72.96

2014

4.8756

58336

271765

306038

4.6629

0.6697

73.15