options crt;
out poly;
doc UCOSTP 'Deflated Unit Cost - polyethylene';
doc PRODP  'Current Production - polyethylene';
doc CUMP   'Cumulative Production - polyethylene';
?Source:  This data set has been in the public domain for years,
?         and is usually attributed to an early study of the
?         Boston Consulting Group.
?         The data is for a 'typical manufacturer'.
load;
end;
noprint;
freq a; smpl 60,72;
load
@YEARP UCOSTP PRODP CUMP;
1960   .58   140    260 
1961   .50   200    400 
1962   .46   400    600 
1963   .43   700   1000 
1964   .39   500   1700 
1965   .33  1100   2200 
1966   .31  1200   3300 
1967   .30  1300   4500 
1968   .29  1400   5800 
1969   .25  2100   7200 
1970   .23 10700   9300 
1971   .18  5000  20000 
1972   .15 10000  25000