If you think the graph as a percentage can be seen that during 1996-2000, Dreamworld is the sales and marketing costs by up to 40% of the average income. As during the years 2002-2006, this cost is lower than 30%.
If you graph the percentage will be seen that during the period 1996 - 2000 Dreamworld has sales and marketing costs by up to 40% of revenues as in the years 2002 to 2006 the cost is less than 30%.
If graph as a percentage can be seen that in the years 1996 - 2000 Dreamworld. Costs of sales and marketing, on average, high 40% of income, while during the years 2002 - 2006 this cost อยู่ต่) than 30%.