Advanced Micros, a retailer in computer equipment, accessories and gadgets was established about 5 years ago. Since its inception, the organization has now 3 fairly large sales outlets in the north, east and west of Singapore.

The owners ofAdvanced Microshave plans to expand the organization's presence in otherparts of Singapore, notably in larger malls with heavier human traffic. They recently recruited you as their Marketing Manager to help improve sales ofAdvanced Micros. You reckon that a trend analysis of sales and the number of customers patronisingAdvanced Micos'retail outlets is one of your priority tasks and have requested your sales executive Chris to retrieve data on the total number of customers patronizingAdvanced Micros'shops over the last four years. Chris presented to you the following data arranged in chronological order:

Table 1: Total number of Customers for Jan to Jun, Year 1 to Year 4:

Year Jan Feb Mar Apr May Jun Year 1 3130 1980 1940 2190 1820 2350 Year 2 2940 3520 3030 3210 3060 2530 Year 3 3990 3730 4110 3840 4320 3940 Year 4 6520 6010 5820 6080 6070 5650 Table 1: Total number of Customers for Jan to Jun, Year 1 to Year 4Year 1 to Year 4 Year Jul Aug Sep Oct Nov Dec Year 1 2190 2630 2960 3350 3720 3890 Year 2 2720 3320 3640 3990 4330 4580 Year 3 4380 4760 5320 5860 6720 6630 Year 4 5280 5740 5930 6230 7460 7730 Table 2: Total number of customers for Jul to Dec, Year 1 to Year 4