On top of the data from Board Game Geek, I also gathered data for important milestones in the board game history and mapped them on the same plot.
Learn more about how I did this plot on my Kaggle Kernel.
From 1950, the rise of games published is exponential.
The Spiel des Jahres Award is introduced in 1978 and marks the first huge jump with the number of board games published per year doubling in 10 years.
In 1995, Settlers of Catan designed by Klaus Teuber is published in Germany and it quickly becomes one of the first Eurogames to achieve a worldwide popularity due to its amazing ability to appeal to experienced gamers as well as those new to the hobby. Within 20 years, the number of board games published per year quadruples and reaches 3429 new games in 2015.
Since then the number of games published rises every year.
I believe this graph greatly demonstrates the current growth trend in the board game industry.