gdpppp95 data for Bosnia/Herzegovina; Bhutan; Brunei; */
data drawn from WDI for the year 2005 (earliest year available).
the countries with no entry cost data are mainly small probably not in service trade data.
KOR designates RKO since 1949
RUS designates SUN between 1949 and 1991
CZE designates CZS between 1949 and 1992
DEU designates FRG between 1949 and 1989