And, supposing v16 is age-related, then it makes sense that one of the remaining "mystery" fields is gender-related... maybe something along the lines of male (Y/N) or gender (1=M/2=F). Also, maybe there are marital status and/or kids/no kids identifiers thrown in for good measure.
Here are my remaining unknown fields, and I am a female married 5 days ago (no biological children, 2 stepchildren):
v03 - Y
v09 - Y
v14 - N
v19 - Y
v20 - N
v26 - 2
v27 - Y
v29 - Y
v32 - [null]
v36 - N
v37 - [null]