10 07 29 Master thesis Juliana Leon - e-Waste. This guide

Table 4: Parameters used for the computers sales projections in the three scenarios.
Sales growth rate (%)
Laptops/total PC sold
Lower scenario Middle scenario Upper scenario All scenarios
2009 10 20 25 55%
2010 10 15 20 57%
2011-2015 5 10 15 60%
According to IDC data, the percentage of laptops over total PCs sold was 35% in
2007 and 45% in 2008. Thus, this percentage is assumed to be 55% in 2009, 57% in
2010, and 60% from 2011 on, as it was applied in the Chilean case following current
trends (Steubing et al., 2010).
Figure 3: Historical sales and projected sales of new computer equipments in Colombia.
Historical sales are data from IDC Colombia and projected sales are according to the middle
scenario.
Average lifespan of desktop PCs (here taken as a CPU with CRT-monitor) and
laptops including the use and storage period are available from a survey done in
2008 by the “Centro de Investigación de Mercados” (CIM, 2008). According to this
survey, in average, public and private institutions use desktops and laptops during 4
years and then store them for 3 more years. Households have the same behaviour
10