Popularity of Manually Installed *NIX Shells on macOS According to Brew

Here is the popularity of various manually-installed *NIX shells according to how often they've been installed within the last 30 days via Homebrew:

Shell Popularity
zsh 44809
bash 21737
fish 9307
tcsh 236
ksh 69

Note, these counts are for people who have manually-installed the shell. Presumably, most people probably just use the built-in version of bash.