r-cran-pwt 7.1.1-1 (arm64 binary) in ubuntu utopic

 This package contains the Penn World Tables (PWT), which provide purchasing
 power parity (PPP) and national income accounts converted to international
 prices for most countries since 1950. The data are developed and maintained by
 scholars at the Center for International Comparisons of Production, Income and
 Prices (CIC) from the University of Pennsylvania.
 .
 The package contains several releases of the PWT, which vary in country
 coverage, time span and reference year for prices.