How to get total number of 200 requests from apache access.log

I have /var/log/apache2/access.log file being monitored and pushed to loki by promtail.
I can access logs under Grafana->Explore->Logs
Now I am trying to add a Dashboard->Visualization that displays total number of 200 requests by going through access.log
I tried the query,

count_over_time({filename="/var/log/apache2/access.log"} |= ` 200 ` [1m])

And it works. But as I understood, its not total, but total over last 1m.

I am trying make count() function works, But not able to get the syntax right.
Any help is appreciated.