Here is the values given by excel using the forecast function:
Code:
1 42.349905
2 -71.076072
3 342.242026
4 404.3974073
5 462.9245268
6 403.1879867
7 424.1080173
8 468.8900198
9 333.5089583
10 590.033783
11 161.2848456
12 878.2815337
13 -465.6670734
14 2699.107445
15 -7156.475964
16 31813.03259
17 -151008.0336
18 820992.1869
19 -4895732.107
20 31804485.87
21 -223132953.9
22 1680489708
23 -13517437308
24 1.15629E+11
25 -1.04791E+12
26 1.00287E+13
27 -1.01055E+14
someone asked for this but I cannot remember who.