parcel describe by federal express and tnt mail service

The line graph highlights information about the changing number of parcels distributed by two service companies (Federal Express and TNT Mail Services) between 1920 and 2000. Overall, those companies delivered between 5000 and 25000 parcels over the period. Clearly, while Fed Ex showed a great fluctuation in parcel number, TNT showed grown tendency during those years. For a more detail look at the graph reveals that initially, TNT brought 5000 parcels while Federal Express delivered threefold packages. From 1920 to 1940, both companies experienced improvement parcels number, however Federal Express increased more extensively than TNT and peaked in the end of that particular period. Since that year, the gap between them were narrowing, even in 1960 the lines met each other when they both delivered approximately 12000. Then, the gap was widening again and met the furthest distance in 1980. Following this, parcels delivered by TNT inclined sharply while Fed Ex decrease extremely smooth thus they met again in 1990, those delivered around 17000 goods. After that year, TNT continued to grow, whereas Fed Ex tended to be stagnant.