Final answer:
The question is asking about the growth of Grosse Point Park outside Detroit. While the population of Detroit has been declining, the specific growth or decline of Grosse Point Park is unclear.
Step-by-step explanation:
The question is asking about the growth of Grosse Point Park outside Detroit. Based on the information provided, it is important to note that the population of Detroit as a whole has been declining for several decades. This decline in population has resulted in a drastic reduction in the number of residents and the abandonment of buildings in the city. However, without specific data or information on Grosse Point Park specifically, it is difficult to determine the extent to which it has grown or declined.