The presented flow graph illustrates the number of overseas tourist to the coast, the mountains and the lakes in a country in Europe, from 1987 to 2007.
At the first glance, it is seen that the coast has almost doubled its visitor number over the 20-year time period. The mountain tourist number is the most stable one among three places, showing a mild increase. The lakes has reached the peak point of all cathegories in 2002, following by a sharp drop in the last 5 years.
The tourist number to the coast has a slight descending tendancy between 1987 and 1992, however the trend changes in the opposite way and it soars dramatically from around 35K people in 1992 to approximately 75 people in 2007. The lakes starts from the lowest point in 1978 with a 10K tourists only, but it rises gradually until 2002 where it reaches its highest point with over 70K people. After the peak, it goes downwards to 50K people in 2007.
The lakes illustrates a more steady data. In 1987, it has 20K visitors, slowly increasing, it reaches nearly 35K tourists in 2007. Since 1992, it has been the least popular destination of three locations.