You can count your own with this snippet. Just replace my username with your own. My count before this comment was 46.

  curl -s "https://hn.algolia.com/api/v1/search?tags=comment,author_sjs382&hitsPerPage=10000" \
    | jq -r '.hits[].comment_text' \
    | grep -o "—" \
    | wc -l

This script is awesome. I checked for "—" (em), "–" (en), and "--", along with other random strings.