It's Valentine's Day, a perfect time to note that the marriage rate in the United States has been on a steady decline for decades, save for a brief spike in 2012.

So romantic.

Here's the rate per 1,000 people since 1997:

You can also view that rate by state. What's up with you, Hawaii? (I've excluded Nevada, which skewed the axes for all the small multiples because of its freewheeling marriage culture). There are some interesting trends here, but most states remain relatively close to the national rate:

Here's the 2015 marriage rate, by state, on a tile grid map: