I have found another interesting thing... based on constant prices Bangladesh and India has almost same per capita gdp measured by IMF...
Bangladesh GDP at constant prices
The GDP at constant prices in Bangladesh was reported at 3491.69 billions National currency in 2009, according to the International Monetary Fund (IMF). In 2015, Bangladesh's GDP at constant prices is expected to be 4925.77 billions National currency. Real GDP is expressed in billions of national currency ; the base year is country-specific. In 2009, Bangladesh's economy share of world total GDP, adjusted by Purchasing Power Parity, was 0.35 percent. In 2015, Bangladesh's share of world total GDP is forecasted to be 0.39 percent. This page includes a chart, historical data and forecast for Bangladesh's GDP at constant prices.
Bangladesh GDP at constant prices
India GDP at constant prices
The GDP at constant prices in India was reported at 37728.44 billions Indian Rupee in 2009, according to the International Monetary Fund (IMF). In 2015, India's GDP at constant prices is expected to be 60704.61 billions Indian Rupee. Real GDP is expressed in billions of national currency ; the base year is country-specific. In 2009, India's economy share of world total GDP, adjusted by Purchasing Power Parity, was 5.06 percent. In 2015, India's share of world total GDP is forecasted to be 6.12 percent. This page includes a chart, historical data and forecast for India's GDP at constant prices.
India GDP at constant prices
Based on these data bangladesh has a per capita gdp of around 3700-3800 usd and india has around 4100 USD. Not a big difference.
See the links for more details...
I think there will be a huge jump in per capita gdp if the base year has been changed...what do you think???