Just looking at Wikipedia I had no idea that they have built and sold so many :
Model Firm Orders Options Deliveries Firm Order Backlog
E170 193 7 190 3
E175 525 296 371 154
E190 587 76 527 60
E195 166 3 150 16
Total 1471 382 1238 233
I was under the impression they weren't that successful owing to Baggage limitations? (Probably much like the CRJs?)