Massive increase in US grads huh?
https://www.aamc.org/download/321462/data/factstable4.pdf
http://www.aacom.org/reports-programs-initiatives/aacom-reports/matriculants
http://www.nrmp.org/wp-content/uploads/2014/04/Main-Match-Results-and-Data-2014.pdf
first year US allopathic matriculants in 2010 (i.e. matched in 2014) - 18,665
first year US allopathic matriculants in 2014 (2018 match) - 20,343, for an increase of 1,678
first year US osteopathic matriculants in 2010 (i.e. matched in 2014) - 5,031
first year US osteopathic matriculants in 2014 (2018 match) - 6,465, for an increase of 1,434
total US enrollment increase from last years match to 2018 will be
~3,112, or ~622/year (3112/5)
number of 1st year positions available through the NRMP in 2010 - 22,809
number of 1st year positions available through the NRMP in 2014 - 26,678, for an increase of
3,869 or ~774/year (3869/5)
so actually the number of positions offered through the NRMP is increasing more per year than US MD/DO enrollment is. And this doesn't even take into account that only ~50% of DO students even enter the match. But hey, don't let any objective data in anyway influence your opinion.
And any talk of 2019 is speculation, the matriculation numbers for 2015 don't exist yet.