请帮我批改一下这篇雅思作文（剑9test3小作文）

请帮我批改一下这篇雅思作文（剑9test3小作文）
The four pie charts reveal information on the ages of the populations in 2000 and projections for 2050 in two countries,namely Yemen and Italy.
In Yemen, the populations under 14 years old was the biggest part(50%) in2000,but it will be a sharply decrease reach 37% in 2050. On the contrary, the time from 2000 to 2050 witnessed a dramatically rise by 11% of the populations between 15 to 59 years old. Similarly,there is a smoothly increase of the population above 60 years old around 2%.
The second two charts of Italy shows the proportion of population under 14 years old is decline slightly to 11.5%. And the ratio of populations which between 15 and 59 years old presents a hugely slump by 15% fro 2000 to 2050. However, the rate of population above 60 years old compared with that in 2050, it is doubled.
Overall, people above 60 years old is the main populations in 2050 of Yemen. Although,in Italy the population between 15 to 59 years old occupies 46.2% in 2050,but the percentage of old people is 42.3% and more higher than that in Yemen.