<Li> Tata Advanced Systems </Li> <Li> Tata AutoComp Systems Limited (TACO) </Li> <Li> Tata Consulting Engineers Limited </Li> <Li> Tata Motors, India's largest manufacturer of commercial vehicles and passenger cars; parent company of: <Ul> <Li> Jaguar Land Rover (manufacturing cars under the Jaguar and Land Rover marques) </Li> <Li> Tata Daewoo Commercial Vehicle </Li> </Ul> </Li>

State the significance of the year 2004 for the tata group