[R] which model suits for these kind of data

[vijaysheegi]

Hi ,
please  help me which model is helpful for  forecasting giving following 
inputs (inputs are not linear)

sales date        shopnuber    total      20%profit  10%profit
2009-10-03	1	41891	2863	39028
2009-10-04	1	49152	7588	41564
2009-10-05	1	45804	23543	22261
2009-10-06	1	48395	48371	24
2009-10-07	1	48906	20204	28702
2009-10-08	1	47003	19442	27561
2009-10-09	1	46296	21635	24661
2009-10-10	1	45980	34791	11189
2009-10-11	1	48423	1483	46940
2009-10-12	1	48800	18500	30300
2009-10-13	1	40694	22068	18626
2009-10-14	1	47356	42361	4995
2009-10-15	1	41501	15964	25537
2009-10-16	1	44762	42296	2466
2009-10-17	1	48607	12023	36584
2009-10-18	1	47513	28275	19238
2009-10-19	1	44527	7927	36600
2009-10-20	1	43948	17981	25967
2009-10-21	1	43139	17682	25457
2009-10-22	1	42426	24454	17972
2009-10-23	1	43620	1689	41931
2009-10-24	1	40850	28595	12255
2009-10-25	1	41665	10339	31326
2009-10-26	1	46151	41662	4489
2009-10-27	1	41355	30207	11148



With this data how to predict total sales for further 6 days.Someone please
help .(if we get totals sales we can obntain 20% and 10% profit)

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