Study the given graph carefully to answer the questions that follow:
Number of people (in thousand) using three different types of mobile services over the years
The number of people using mobile service L in the year 2006 forms approximately what per cent of the total number of people using all the three mobile services in that year ?
Total number of people = 120
Number of people using L = 21 (approx)
Percentage = 20/120 * 100 = 16.66% = 17%
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