You would have received less than 6 vaccines as a child if you're 67. You didn't receive what kids recieve today. Nor did the ones you received have the same ingredients/components as today's versions nor are they ingredients produced in the US (most are from china). They used to be single dose vials with no need for preservative now it's more economical and convenient (aka profitable) for them to be in multi dose vials (w need for preservative). The vial must be properly shaken prior to withdrawing each dose or there's a risk of the bottom of the vial doses to have a higher concentration of the toxic preservative.

Now that's just speaking for the approx 6 that are like the ones you received. Kids today receive 72 and start at a much earlier age. In the early 90's there was a CDC campaign called "immunize by age 2"