“…The household consumption patterns differ across households and across time because of the differences in income, prices and all such attributes that determine households' preferences. Various studies have emphasized, on the basis of empirical analysis, that own price of good or service, prices of other goods and services and income of the households are the most dominant factors of demand; for example, Massell (1969), Hay and Sinha (1972), Ray (1982), Yen and Jensen (1996), Burki (1997), Ozer (2003), Ahmad and Arshad (2007), Ekholm et al (2010) and Aziz and Malik (2010).…”