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_sample

Format

A data frame with 1428 observations on the following 7 variables.

country

the country name

isocode

The country's ISO code

year

a numeric vector for the year

pop

Population in millions

hc

Index of human capital per person, based on years of schooling and returns to education

rgdpna

Real GDP at constant 2011 national prices (in million 2011 USD)

labsh

Share of labor compensation in GDP at current national prices

Source

Taken from the pwt9 package. See: http://www.ggdc.net/pwt/