This is from the HI website. What does it refer to?
Who is Eligible to Apply for a Genealogy Request?
Any private individual or individual employed, endorsed, or sponsored by a governmental or private organization or agency, working on genealogy projects may apply for issuance of copies of vital records on file with the Department of Health. Any applicant seeking issuance of copies of vital records of events that occurred seventy-five years or less prior to the current year must establish a direct and tangible interest in the records to be eligible for them (see Certified Copies for more information). An applicant need not establish a direct and tangible interest in vital records of events that occurred more than seventy-five years prior to the current year to apply for these records.
I guess all vital records--marriages, births, and deaths. Sounds like if the event occurred in the last 75 years you need to prove your direct interest in that information before it will be issued.