Study the given bar graphs and answer the question that follows.
The bar graphs represent the amount invested in raw materials (in 2 crore) and the sale of the products, by a textile companyin the years 2007— 2012. The X-axis represents the years. The Y-axis represents the amount invested in raw materials (in 2 crore) in figure 1 and sale of products in figure 2, respectively.

Figure 1

Figure 2

In which two years was the difference of the amount invested and the sales of products the same?