A small fresh produce store has three product categories: fruits, vegetables, and dairy. As most products are sold by weight or volume, they simply note down the primary product being purchased by each customer. They have been compiling the sales data over the past four quarters. In the first quarter there were 5,500 fruit customers, 3,500 vegetable customers, and 2,400 dairy customers. The second quarter saw 6,600, 5,600, and 3,100 customers, respectively. The third quarter recorded 6,200, 5,500, and 2,800 customers, and the final quarter saw 6,400, 5,100, and 3,200 customers. Create a bar graph to compare the number of customers for each product in a certain quarter.