The graph given depicts detailled information about water consumption (in cubic kilometre) of the whole world in three sectors (agriculture, industrial, and domestic) over the 100-year period. The table below compares water usage per person in Brazil and Democratic Republic of Congo (DR Congo). Overall, agriculture had always recieved the highest water contribution throughout the century, while Brazil has substantially more water consumption per person compared to DR Congo.
In 1900, the amount of water used by agriculture was half a million cubic kilometres. The figure doubled in 1960 and kept soaring until it reached approximatly 3000 cubic kilometres by the year 2000. Following a similar trend, water usage in the industrial sector only go up during the 1950s, but eventually got half the number of what agriculture achieved (1500 square kilometres). In contrast water for domestic use was only made available in 1960 and only rose by a small margin.
Looking at the table, it can be seen that Brazil has 359 cubic metres of water consumption per capita, whereas DR Congo only used 8 cubic metres. In addition, Brazil also controls higher square kilometres of irrigated land, as well as having a higher population at 176 million people.