For example, Bolivia's mean consumer expenditure per capita in 2001 (USD 216 PPP per month) was quite similar to that of Egypt's in 1999 (USD 225 PPP per month) yet the Bolivian national poverty line, USD 142 PPP per month, was nearly three times as large as the Egyptian national line at USD 53 PPP per month. Similarly, mean consumer expenditure per capita in Russia in 2002 (USD 455 PPP per month) was close to that of Poland in 1993 (USD 465 PPP per month), but the national poverty line in Russia was only USD 132 PPP per month versus USD 203 PPP per month in Poland for the respective time periods. The possible political economy determinants of how poverty lines are set call for a warning against the use of programme eligibility lines as poverty lines (such as the eligibility criteria for social assistance or cash transfers). Indeed, if poverty lines or their evolution depend on executive rather than technical decisions, perverse effects can result.