Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
In contrast, the population of Leatherback turtles has suffered a severe decline, particularly in 1988 when numbers fell dramatically. The rate of decline in the population appears to have slowed and it has remained relatively stable since 2009.
There was also a fall in the number of Green turtles of around 30% between 1984 and 2002. The population increased slightly in 2010 but it had dropped again by 2012.
It is only Olive Ridley turtles that have seen a steady increase in population over this period. Their numbers dropped slightly in 2007 and again in 2012 but the overall trend has been a positive one.