Table D-12.  Mean Age and Months of Completed Service of Active Component Enlisted Members, FYs 1973-2018
FISCAL MEAN % 20 YEARS % 40 YEARS MEAN MONTHS % 3 YEARS % 4-10 YEARS % 11 YEARS
YEAR AGE OR YOUNGER OR OLDER   OF SERVICE OR LESS   OR MORE
1973 25.02 32.91 3.10 69.82 60.44 18.07 21.45
1974 24.97 32.26 3.69 69.59 60.85 18.96 20.10
1975 24.92 32.28 3.70 68.17 59.92 20.73 19.22
1976 24.93 31.71 3.73 67.60 58.56 23.54 17.86
1977 24.93 31.60 3.67 66.52 58.56 23.54 17.86
1978 25.01 29.97 3.60 67.26 58.17 24.27 17.52
1979 25.07 29.52 3.55 67.74 57.49 24.63 17.84
1980 25.01 29.76 3.42 66.51 57.56 24.92 17.47
1981 25.14 28.40 3.48 67.07 56.07 26.70 17.15
1982 25.37 25.43 3.55 68.63 54.14 28.38 17.47
1983 25.56 23.53 3.74 69.99 52.60 29.39 17.96
1984 25.69 22.82 3.72 71.09 51.64 29.89 18.43
1985 25.81 22.13 3.68 72.29 50.72 30.24 18.97
1986 25.92 21.65 3.70 73.12 50.53 30.15 19.30
1987 26.09 21.08 4.10 74.76 49.53 30.45 19.96
1988 26.26 20.89 4.38 76.73 48.19 30.60 21.15
1989 26.36 21.02 4.48 78.01 47.19 30.69 22.05
1990 26.66 20.03 4.78 81.77 44.70 31.36 23.91
1991 26.95 17.88 5.00 84.80 43.06 31.59 25.32
1992 27.08 17.35 5.28 86.35 42.60 30.87 26.49
1993 27.21 17.32 5.42 87.70 41.41 31.26 27.29
1994 27.33 16.88 5.49 89.58 40.73 31.29 27.93
1995 27.36 15.90 5.73 89.33 41.29 30.53 28.18
1996 27.41 16.44 5.86 89.64 41.75 29.28 28.96
1997 27.41 17.59 6.09 89.20 42.59 27.93 29.47
1998 27.34 18.31 6.21 88.37 44.07 26.60 29.33
1999 27.26 19.31 6.26 87.28 45.83 25.49 28.68
2000 27.10 20.45 6.53 85.53 46.98 24.86 28.16
2001 27.03 20.39 6.78 84.38 47.49 25.50 27.01
2002 27.07 19.41 7.35 84.13 47.36 26.51 26.13
2003 27.04 18.15 7.31 83.28 46.97 27.98 25.05
2004 27.01 17.66 7.35 82.58 46.92 28.74 24.34
2005 27.10 16.61 7.40 83.15 46.08 29.94 23.98
2006 27.07 16.39 7.27 81.98 46.21 30.56 23.23
2007 27.09 16.06 7.06 80.95 46.12 31.12 22.75
2008 27.08 16.09 6.92 80.28 45.85 31.78 22.37
2009 27.17 15.11 6.95 80.44 46.02 31.58 22.40
2010 27.31 13.95 7.12 80.90 45.28 32.18 22.54
2011 27.37 13.22 7.08 81.11 44.91 32.43 22.66
2012 27.39 13.69 7.05 80.96 44.98 32.07 22.96
2013 27.29 14.96 6.92 79.99 46.21 30.77 23.02
2014 27.31 14.96 6.92 80.31 46.15 30.48 23.37
2015 27.21 15.36 6.63 79.43 46.65 29.46 23.89
2016 27.12 16.03 6.37 78.48 46.77 29.98 23.26
2017 26.98 17.12 6.07 76.59 46.80 30.53 22.67
2018 26.87 17.70 5.76 75.21 47.77 30.33 21.90
   
Source: Military data are provided by the Defense Manpower Data Center (DMDC).