def remove_Teams_If_Program_Does_Not_Exist_Yet(teams, year):
	if year < 2019:
		for program in ['California Baptist', 'North Alabama']:
			teams = drop_School_From_DataFrame(teams, program)
		if year < 2014:
			for program in ['Grand Canyon', 'Incarnate Word', 'Massachusetts-Lowell']:
				teams = drop_School_From_DataFrame(teams, program)
			if year < 2013:
				if year > 1973:
					teams = drop_School_From_DataFrame(teams, 'Abilene Christian')
				for program in ['Northern Kentucky', 'nebraska-omaha']:
					teams = drop_School_From_DataFrame(teams, program)
				if year == 2012 or year == 2011:
					teams = drop_School_From_DataFrame(teams, 'New Orleans')
				if year < 2011:
					for program in ['Bryant', 'Cal State Bakersfield', 'Central Arkansas', 'Florida Gulf Coast', 'Houston Baptist',
									'North Carolina Central', 'North Dakota', 'Presbyterian', 'Seattle', 'South Carolina Upstate',
									'South Dakota', 'southern-illinois-edwardsville']:
						teams = drop_School_From_DataFrame(teams, program)
					if year < 2010:
						for program in ['Kennesaw State', 'NJIT','North Florida', 'Utah Valley']:
							teams = drop_School_From_DataFrame(teams, program)
						if year < 2009:
							for program in ['North Dakota State', 'South Dakota State']:
								teams = drop_School_From_DataFrame(teams, program)
							if year < 2008:
								for program in ['california-davis', 'Longwood', 'Northern Colorado']:
									teams = drop_School_From_DataFrame(teams, program)
								if year < 2004:
									teams = drop_School_From_DataFrame(teams, 'Lipscomb')
									if year < 2003:
										for program in ['Gardner-Webb', 'IPFW', 'Savannah State', 'Texas A&M-Corpus Christi']:
											teams = drop_School_From_DataFrame(teams, program)
										if year < 2002:
											for program in ['Binghamton', 'california-riverside']:
												teams = drop_School_From_DataFrame(teams, program)
											if year < 2000:
												for program in ['Alabama A&M', 'Albany (NY)', 'Belmont', 'Elon', 'High Point', 'Oakland', 'Sacred Heart', 'Stony Brook']:
													teams = drop_School_From_DataFrame(teams, program)
	return (teams.reset_index()['School'])