I have been in BI more than 10 years and in fact it was always in Top-3. It is changing, transforming, adding new concepts blah blah but BI is still hot. You know what it will be always hot. What BI means has become the meaning of business or management way of information technology. If it is not hot , it means you do not care your business..🙂 anyway good figures to mention in your ppt.