US federal prison population

As the federal prison population has declined, bowling centers have also declined, a correlation of 0.985 that suggests either that released prisoners were not going bowling or that both institutions—incarceration and recreational bowling—peaked in the same era and have been declining together ever since. The cells empty, the lanes empty, and the chart records both with the quiet melancholy of two American institutions that peaked in the 1990s and have been gently closing ever since.

Both declined in 2020 for very specific pandemic reasons. Federal prisons granted unprecedented early releases to reduce covid outbreaks inside facilities, while bowling centers — many already struggling — closed in large numbers under the same public health orders. Two institutions emptied out by the same spring.

Eight years of prisons and bowling alleys declining together is an accidentally profound correlation: two institutions that defined mid-century American life—one punitive, one recreational—both fading in the same decade. The prison reforms, the bowling alley closes, and the chart notes both with the spare precision of a strike followed by a gutter ball. Neither institution is what it was. Both leave empty spaces.