1764 Marriage Record Dates

Can someone please explain the dates within the 2 far right columns? Birthdates? Specifically the marriage for Nils Krosshaug & Kari Gullhagen; half way down on the right side. Thank you. Source information: Buskerud county, Ål, Parish register (official) nr. I 1 (1744-1769), Marriage records 1763-1764, page 23-24. Permanent pagelink: http://www.arkivverket.no/URN:kb_read?idx_kildeid=8544&idx_id=8544&uid=ny&idx_side=-6 Permanent imagelink: http://www.arkivverket.no/URN:NBN:no-a1450-kb20070314650106.jpg