The Pro Apparel company manufactures baseball-style caps with various team logos. The caps come in an assortment of designs and colours. The company has had monthly sales for the past 24 months as follows:

Month                                         Demand (1000s)

1 ........................................................ 8.2

2 ........................................................ 7.5

3 ........................................................ 8.1

4 ........................................................ 9.3

5 ........................................................ 9.1

6 ........................................................ 9.5

7 ........................................................ 10.4

8 ........................................................ 9.7

9 ........................................................ 10.2

10 ........................................................ 10.6

11 ........................................................ 8.2

12 ........................................................ 9.9

13 ........................................................ 10.3

14 ........................................................ 10.5

15 ........................................................ 11.7

16 ........................................................ 9.8

17 ........................................................ 10.8

18 ........................................................ 11.3

19 ........................................................ 12.6

20 ........................................................ 11.5

21 ........................................................ 10.8

22 ........................................................ 11.7

23 ........................................................ 12.5

24 ........................................................ 12.8

Develop a forecast model using the method you believe best, and justify your selection using a measure (or measures) of forecast accuracy.