5.3K 
According to data analysis from Boston Consulting Group, there is a rapid growth in technology. The below image shows that, time it took to reach 100 million users.
Image from BusinessInsider.
Telephone was launched in 1878 and took 75 years to reach 100 million users, Facebook took 4 years and Instagram took 2 years to reach 100 million users, while Candy Crush game has got 100 million users in more or less than a year.
This shows us how much changes has been made in technology and used by people.
