Answer:

NINETEEN

Answer	Crossword Clue
NINETEEN	XIX
NINETEEN	Of college age
NINETEEN	Like many a college sophomore

NINETEEN	What an apostrophe may stand for, in dates
NINETEEN	Impossible cribbage score
NINETEEN	Eighth prime number
NINETEEN	Dartboard score
NINETEEN	What an apostrophe may stand for
NINETEEN	Impossible cribbage hand
NINETEEN	Good score in blackjack
NINETEEN	College age

NINETEEN	Number of states when Monroe was sworn in
NINETEEN	Standard dimension of a Go board
NINETEEN	Drinking age in Ontario
NINETEEN	Indiana's statehood position
NINETEEN	Typical hours per day that a three-toed sloth sleeps
NINETEEN	Square root of 361.
NINETEEN	A roundhouse and four jacks: Pinochle.
NINETEEN	The amendment that gave women the vote.

NINETEEN	... fifty-five.
NINETEEN	Extra golf hole.
NINETEEN	Amendment that legalized woman suffrage.
NINETEEN	One of the cardinals.
NINETEEN	Not quite a score
NINETEEN	Score minus one
NINETEEN	Leader of this century
NINETEEN	Almost a score

NINETEEN	Teen-ager's terminus
NINETEEN	Sophomore's age, maybe
NINETEEN	It's in the "I" column in bingo
NINETEEN	Start of this year?
NINETEEN	When repeated twice, Olive Oyl's measurements
NINETEEN	It barely misses a score
NINETEEN	Johnny Unitas wore it
NINETEEN	When you can drink, in most of Canada

NINETEEN	Hayes' place, presidentially
NINETEEN	On January 1, we stopped writing it so much
NINETEEN	"Hey ....." (Steely Dan hit)
NINETEEN	"... Eighty-Four" (Orwell)
NINETEEN	Stop writing it on January 1 2000