You&#x27;re missing the precipitous post WW2 drop in ridership. A discussion of this curve, with a link to the ridership graph:<p><a href="https:&#x2F;&#x2F;www.reddit.com&#x2F;r&#x2F;dataisbeautiful&#x2F;comments&#x2F;2bk7f5&#x2F;new_york_city_subway_annual_ridership_19042013_oc&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.reddit.com&#x2F;r&#x2F;dataisbeautiful&#x2F;comments&#x2F;2bk7f5&#x2F;new...</a>