Table 2. Percentage of high school seniors in 2004, by birth month and year

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Birth month and year	Total
1981 or before	0.4

1984
Jan-1984	0.1	!
Feb-1984	‡
Mar-1984	0.1	!
Apr-1984	‡
May-1984	0.1	!
Jun-1984	0.2	!
Jul-1984	0.2
Aug-1984	0.2
Sep-1984	0.3
Oct-1984	0.4
Nov-1984	0.4
Dec-1984	0.5

1985
Jan-1985	0.5
Feb-1985	0.7
Mar-1985	0.8
Apr-1985	1.1
May-1985	1.5
Jun-1985	1.6
Jul-1985	1.9
Aug-1985	3.2
Sep-1985	5.3
Oct-1985	6.0
Nov-1985	5.9
Dec-1985	6.6

1986
Jan-1986	7.5
Feb-1986	6.3
Mar-1986	7.2
Apr-1986	6.4
May-1986	6.8
Jun-1986	6.3
Jul-1986	6.8
Aug-1986	5.7
Sep-1986	3.7
Oct-1986	2.2
Nov-1986	1.5
Dec-1986	0.8

1987 or after	0.6

! Interpret data with caution. Estimate is unstable because the standard error represents more than 30 percent of the estimate.
‡ Reporting standards are not met; the standard error represents 50 percent or more of the estimate.
# Not applicable.
Note: Totals may not sum to 100 due to rounding.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics. Education Longitudinal Study of 2002 (ELS:2002) First Follow-Up Restricted-Use File.

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