以下是X ,Y 的基本数据，请各位大虾帮忙做一下回归，看Y 关于X以及自身滞后几期最合适，具体的回归表达式是什么？非常谢谢！

100
100
102.7
100.8
106
100
103.0081
101.2032
129.956
133.7
105.7893
104.0369
135.1542
161.9107
121.7635
117.3536
143.9393
173.0825
131.9916
128.5022
152.4317
180.352
140.5711
128.5022
152.4317
188.649
153.2245
160.7563
173.01
213.3611
168.2383
162.5246
173.529
216.5615
171.6031
167.4003

Y

101.5
103.733
102.8195
101.906
103.0225
105.1853
104.6703
105.4727
110.028
110.9705
106.031
116.9692
125.9821
118.0726
114.8316
130.3037
141.7299
130.3521
124.1329
140.4674
153.0682
138.4339
133.1946
183.5909
158.1195
143.9713
144.2497
205.8054
178.8331
160.0961
151.4622
197.3674
175.9718
159.936
153.5827
207.6305