Back in the 1990s, it added, "per capita income in Western Europe was four times higher than that in Bulgaria, while one decade later this ratio is 2.5 measured by purchasing power parity".
Dodaje se da je devedesetih godina "prihod po glavi stanovnika u zapadnoj Europi bio četiri puta viši nego u Bugarskoj, dok je deset godina kasnije taj odnos 2,5 puta, mjereno na temelju kupovne moći".