In 2015 the situation of the INDEC was strange, the inflation was underestimated [1] and also the dollar/peso ratio was fictional. So take all that numbers with a grain of salt. However I agree that there is (almost) no gro in the GDP in a long time. [2]

[1] Comparison of the official inflation rate and the unofficial one published by the oposition in the congress: https://economictrends.com.ar/2015/01/16/economia-en-1-grafi...

[2] Anyway, I remember 2015 was a good year, we had a huge soy harvest and the international price was very high.