Just announced:  World Bank Data features and data are available.  Previous posts have demonstrated how to access and plot this data using R (including the use of the R WDI package).  The chart above can be created using the following program in R.

library(ggplot2)
library(WDI)


DF <- WDI(country=c("US","FR","DE","GB","CN","RU","IN"), indicator="SP.POP.TOTL", start=1990, end=2008)
ggplot(DF, aes(year, SP.POP.TOTL, ggplot(DF, aes(year, SP.POP.TOTL, color=country))+geom_line(stat=”identity”)+theme_bw()+xlab(“Year”)+opts(title=”Total Population”)+ylab(“”)