Figure B.5 shows the volume of internet traffic since 1984 when it averaged about 15 gigabytes per month. In 2014, three decades later, the volume of internet traffic had increased by nearly 3 billion-fold to reach more than 42 billion gigabytes per month. In addition to increasing bandwidth, this increase reflects a variety of other causes, including growth in the number of users, greater sophistication and variety in the possible uses of the internet.