data("pwt8.0")
Version 8.0 has been constructed by Feenstra, Inklaar, and Timmer (2013, 2015).
Compared to earlier versions (see Heston et al. 2012, and also R package
pwt), the construction of the data has changed somewhat and also some
variables have been renamed, added, or dropped. The PWT 8.0 website provides
many additional materials including documentation and scripts for constructing
customized variables.
The data set pwt8.0
provided here largely preserves the properties
of the original data. All character or indicator variables are stored
as factors, though. Also, the variables isocode
(rather than
countrycode
) and currency
(rather than currency_unit
)
are used as in package pwt. Following Feenstra et al., the ISO
country code (isocode
) now strictly follows ISO 3166-1 alpha-3, i.e.,
COD (rather than ZAR) is used for the Democratic Republic of Congo,
DEU (rather than GER) for Germany and ROU (rather than ROM) for Romania.
Feenstra et al provide a detailed list of overlapping variables in version 7.1 and 8.0. Here, only the variable names are list:
Version 8.0 |
Version 7.1 |
cgdpe |
tcgdp |
xr |
xrat |
pl_gdpe |
p |
csh_c |
cc |
csh_i |
ci |
csh_g |
cg |
pl_c |
pc |
pl_i |
pi |
pl_g |
pg |
Similarly, the following variables from version 7.1 can be constructed (approximately) from 8.0 data:
Version 7.1 |
Link to Version 8.0? |
ppp |
Compute as pl_gdpe * xr |
cgdp |
Compute as cgdpe/pop |
y |
Divide cgdpe by pop and divide by USA values |
rgdpch |
Closest comparison: rgdpe/pop |
rgdpwok |
Closest comparison: rgdpe/emp |
rgdpl2th |
Closest comparison: rgdpe/(avh * emp) |
Feenstra RC, Inklaar R, Timmer MP (2013). PWT 8.0: A User's Guide. URL http://www.ggdc.net/pwt/.
Feenstra RC, Inklaar R, Timmer MP (2015). The Next Generation of the Penn World Table, American Economic Review, forthcoming. URL http://www.ggdc.net/pwt/.
Heston A, Summers R, Aten B (2012). Penn World Table Version 7.1, Center for International Comparisons of Production, Income and Prices at the University of Pennsylvania.
Psacharopoulous G (1994). Returns to Investment in Education: A Global Update. World Development, 22(9), 1325-1343.
pwt8.1