Read this and answer the question. If the question is unanswerable, say "unanswerable".

Originally, Dell did not emphasize the consumer market, due to the higher costs and unacceptably low profit margins in selling to individuals and households; this changed when the company’s Internet site took off in 1996 and 1997. While the industry’s average selling price to individuals was going down, Dell's was going up, as second- and third-time computer buyers who wanted powerful computers with multiple features and did not need much technical support were choosing Dell. Dell found an opportunity among PC-savvy individuals who liked the convenience of buying direct, customizing their PC to their means, and having it delivered in days. In early 1997, Dell created an internal sales and marketing group dedicated to serving the home market and introduced a product line designed especially for individual users.

When did Dell end their internal marketing group?
unanswerable