These are some macroeconomic data for 21 select (rich) countries. I've used these data before to discuss issues of grouping and skew in cross-sectional data.
pwt_sampleA data frame with 1428 observations on the following 7 variables.
countrythe country name
isocodeThe country's ISO code
yeara numeric vector for the year
popPopulation in millions
hcIndex of human capital per person, based on years of schooling and returns to education
rgdpnaReal GDP at constant 2011 national prices (in million 2011 USD)
labshShare of labor compensation in GDP at current national prices