When did VW introduce stability control on Passat sedans?
 

I was interested in getting a 2004 Passat sedan (still), but wanted stability control (ESP in VW-speak). The trusty Wikipedia page on Passats doesn't mention it though, and a Google search only came up with one site with that year's model that said it could be added as an option. So, is that correct? (It was an option in 2004, introduced as standard later on?)