Budget of Horror Films

Movie budgets have exploded over the past few years, although horror movie budgets haven't risen, it could be argued that they have decreased. The average budget calculated every 5 years based on the 20 most popular horror movies between those 5 years has decreased in recent years a peak of $36 million in 2000-2005 to just $13 million from 2015 to the present.
More recently released horror films have a budget 35%lower than those released in previous years. Most horror films these days use found-footage style of films and they have had a major impact on the budget of horror films.
In 1999 'The Blair Witch Project' made $250 million on a cost of just $60 million, in the newly released 'Blair Witch Project' has used some very similar footage as the original and it only had a budget of $4 million.
Blumhouse had their first hit in 2009 with Paranormal Activity it made $190 million in the box offices and it only had a $50,000 budget.

From my research I have found out that the smaller the budget the larger the box office sales, when it comes to the horror genre.