Still an awful visualization, since the scale of the chart makes it impossible to compare the release years. Also it should have a legend explaining that.
I was thinking it was meant to line up with the year 2000 (as shown on the axis at the bottom), but then I saw that somehow 2001 was behind the vertical axis which makes it not make sense at all
My guess is this was graphic made some time ago and the line on the chart was the current year. Given the newest films on the list look to be Idiocracy and Children of Men from 2006, that would make the line sometime in the mid-late 2000's.