options nocenter ls=80;
libname save '.';
data save.pwt56;
infile 'pwt56.dat' lrecl=256 stopover;
length country $ 15;
input line country & $ year
POP RGDPCH RGDPL C I G RGDPTT Y CGDP CC CI CG P PC PI PG XR RGDPEA RGDPW
KAPW KDUR KNRES KOTHER KRES KTRANP OPEN RGNP IPRI STLIV;
run;

proc means;
run;