The current accepted protocol in all veterinary colleges in the USA is once every 3 years for the general DHLPP vaccine. For rabies, in most states it is also 3 years but you would need to check with your local and state laws as some states require every year.
Beware of over vaccination. Most pets do not need to be revaccinated even every 3 years. For the health of your pet, request your vet do a titer instead to check the dog's level of immunity.
Once a year
a 56 year old women should only "make love" a couple times a year. that's nasty!
12 times.
six months a year
At least 365 or more.
As a bare minimum, every 3 months. (4 times a year)
At least every 3 months, which means 4 times a year. Two of which should be Mectin based.
2 times per day
3 or 2 times a day
at least once or twice a year depending on how old it is.
A person should go to the store at least 1 to 2 times in a month. So you do 2x12=24. So a person should go to the grocery store at least 24 times a year if not more.
once, unless they have been cut by metal then they should have it asap