Qiyaas mid: Xisaabi iyadoo loo eegayo xaddiga waxyaabaha lagu daro ee lagu daro iyo waxyaabaha lagu buuxiyo ee tirada guud ee caaga ah caagga ceyriinka ah oo la xisaabiyey qiyaastii 50% {{1} .
Qiimee 2: Sannadkii 2001, laanta taayirrada ah waxay ku xisaabtantay lacag dhan 83 {55 milyan oo taayir ah Sannadkii 2005, wadarta guud ee taayirrada taayirrada waxay ahayd 125 milyan, oo u dhiganta 91, {{{{{}} taayirro. Iyada oo ku saleysan tan, baahida loo qabo in lagu daro waxyaabo badan oo lagu daro ku darista ku dhaca shaqada taayirrada ayaa la xisaabinayaa.
Qiyaas 3: Sanadihii ugu dambeeyay, taayirrada gawaarida xamuulka ah ee all-bir ayaa si dhakhso ah loo bilaabay, iyo waxyaabo kale oo ku saabsan waxyaabo kale oo caag ah ayaa hadda qaata 11 {5} 00R20 sida tusaale ahaan in la xisaabiyo baahida wax lagu daro wax lagu daro qaar ka mid ah waxyaabaha lagu daro.