In April 2011, the price remained above $209. In 2013, more than 10% of the world population lived on less than US$2 per day. The latter income segment would have to spend more than a quarter of its annual income to purchase a single laptop, while the global average of ICT spending is 3% of income. Empirical studies show that the borderline between ICT as a necessity good and ICT as a luxury good is roughly around the "magical number" of US$10 per person per month, or US$120 per year.