Log whatever IF hours you happen to fly in IMC conditions. Some flights there will be none, some flights a high proportion of the time will entail IF. Don't log it if you didn't fly it. It's not exactly a job interview winner if you claim 'x' number of hours but fly with skill level appropriate to some fraction of that time. It's also suspicious if your claimed job history is known to involve lots of VFR and minimal IFR, or lots of IFR in mostly VMC, but your log shows a high proportion of IF in those flights.
My IF time as a proportion of my total time has varied all over the place, depending on what my job was at the time. Some would have frequent IF for extended periods, others almost none.