New research reveals one reason it’s becoming harder than ever to keep up with the scripted programming on TV, documenting a phenomenon that many observers already suspected: There are more scripted original series on TV than ever before.

TVbytheNumbers.com cites research released by FX Networks that charts the trend in the number of scripted originals on television by year. The number passed the 400 mark for the first time in 2015, reaching 409.

That’s up from 376 a year ago and 343 in 2013 — and almost double the figure of 217 just five years ago, in 2010. The number has been climbing steadily each year.

The breakdown by distribution segment shows that streaming services account for a significant part of the growth, with the number in the online segment rising from 27 shows in 2014 to 44 shows this year — and up from only 4 series in 2010. But all four segments are increasing, as broadcast went up to 147 this year, from 145 in 2014 (and 114 in 2010); basic cable went up to 181, from 169 last year (and 74 in 2010); and pay cable rose to 37, up from 35 a year ago (and 25 in 2010).