The bar chart shows the percentage of the small medium large companies which used social media for business purposes between 2012 to 2016

The given bar charts demonstrate the proportions of different enterprise
sizes elaborating social devices for business aims in a 4-years period, starting from the year 2012.
On the whole, both small and medium firms witnessed an upward trend over the period. Therefore, the presence of large companies topped the list in most years.
It is clear to see that the figure for small and medium firms increased steadily from 2012 to 2014 to reach 38% and 45% respectively. In addition, social media utilized by large enterprises were over 2 times higher in comparison with the latter company types in two years 2012 and 2013, at that point, the figure fell minimally to 70% in 2014.
Despite the percentages of distinctive types of businesses decreased significantly in the year 2015, they bounced back to reach their peak at 50%,51%, and 75% correspondingly in 2016.