Average yearly enrollment*

Eleven swimmers turned out in March 1974 to inaugurate the DAM program. By October membership was 28, and by November it was 52. 

1975: 104 1980: 415 1990: 385 2000: 376 2010: 465
1976: 201 1981: 387 1991: 381 2001: 352 2011: 463
1977: - 1982: 381 1992: 412 2002: 366 2012: 472
1978: 412 1983: 446 1993: 405 2003: 389 2013: 493
1979: 394 1984: 511 1994: 389 2004: 399  
  1985: 567 1995: 417 2005: 437  
  1986: 510 1996: 444 2006: 454  
  1987: 479 1997: 451 2007: 437  
  1988: 432 1998: 482 2008: 448  
  1989: 390 1999: 409 2009: 454  

*Calculated by taking averages of the beginning and ending enrollments for each quarter of the year. It does not include late members who average approximately 30, but includes those on leave, those who were members a minimum of one week as well as those who regularly pay dues.