2007 Post-roundup	

year_born	age	Females	Males
2007		0.5	62	51
2006		1	24	21
2005		2	18	6
2004		3	12	6
2003		4	15	8
2002		5	14	3
2001		6	7	6
2000		7	14	
1999		8	9	
1998		9	11	
1997		10	7	
1996		11	3	
1995		12	3	
1994		13	3	
1993		14	1	
1992		15		
1991		16	1	
1990		17		
1989		18	1	
1988		19	3	
A tags		12+	11	
B tags		10+	1	
		220	101

321	: Total number of animals in herd as of 1 Jan 08
217	: Total animal units in herd as of 1 Jan 08
"256,171"	: Total pounds of bison mass at 2007 roundup