This is tangentially related to calling, but apparently the percentage of weddings hosted in barns has grown from 2% to 15% in the last decade (https://tinyurl.com/ycbm9god). While the article doesn't specific that called dancing has increased as well, I'd be surprised if it hadn't. 

A decade ago is about when I started calling. I'd appreciate hearing from folks with longer records how they feel the prevalence of wedding gigs has shifted over time; and how that varies geographically. 

Although possibly the fluctuations are too large to get a decent signal out of the small sample size. From my own records:

2017: I had 14 One-Night-Stand gigs, and 1 of those was a wedding. 
2016: I had 14 family level dances, and 4 of those were weddings. 
2015: 10 ONS, 3 weddings. 
2014: 14 ONS, 7 weddings
2013: 13 ONS, 2 weddings
2012: 4 ONS, 1 wedding

As an aside, I really think the 15% of couples having their wedding party in a barn should be framed as a rebound from a longer historic decline. But if it's getting noticed and push-back from banquet hall trade groups, it may be coming to a close. 

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