We have data for sales in thousands of USD for a small electronics shop, by month, for the years 2010 to 2017. We would like to predict sales for each month of 2018:
| Month/Year | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 |
| January | 10.5 | 11.9 | 13.2 | 14.6 | 15.1 | 16.5 | 18.9 | 20 | |
| February | 11.9 | 12.6 | 14.4 | 15.4 | 17.4 | 17.9 | 19.5 | 20.8 | |
| March | 13.4 | 13.5 | 16.1 | 16.2 | 17.2 | 19.6 | 19.8 | 22.1 | |
| April | 12.7 | 13.6 | 14.9 | 17.8 | 17.8 | 20.2 | 19.7 | 20.9 | |
| May | 13.9 | 14.6 | 15.7 | 17.8 | 18.6 | 19.1 | 20.8 | 21.5 | |
| June | 14 | 14.4 | 15.3 | 16.1 | 18.9 | 19.7 | 21.1 | 22.1 | |
| July | 13.5 | 15.7 | 16.8 | 17.4 | 18.3 | 19.7 | 21 | 22.6 | |
| August | 14.5 | 14 | 15.7 | 17 | 17.9 | 20.5 | 21 | 22.7 | |
| September | 14.3 | 15.5 | 16.8 | 17.2 | 19.2 | 20.3 | 20.6 | 21.9 | |
| October | 14.9 | 15.8 | 16.3 | 17.9 | 18.8 | 20.3 | 21.4 | 22.9 | |
| November | 16.9 | 16.5 | 18.7 | 20.5 | 20.4 | 22.4 | 23.7 | 24 | |
| December | 17.4 | 20.1 | 19.7 | 22.5 | 23 | 23.8 | 24.6 | 26.6 |
The data...
