year    euro
2010    17,785
2011    17,515
2012    16,880
2013    18,036
2014    18,400
2015    18,211
2016    18,382
2017    22,248

However, nothing makes sense as it forecast a unique same value for the future. That's because the sample is too small.

I tried with a linear forecast in Excel and I got something that makes sense. However, is this methodology applicable to my dataset?

Thanks :)