For those keeping score at home, here are the number of doping positives and disqualifications at the Olympic Games, that we know of (we = myself and @OlympicStatman). In total, there are 418 known cases.
[table]
Year,City,###
2012,London,121
2008,Beijing,86
2000,Sydney,42
2004,Athínai,41
2006,Torino,19
2016,Rio de Janeiro,17
1996,Atlanta,13
1984,Los Angeles,12
2014,Sochi,12
1976,Montréal,11
1988,Seoul,10
1972,München,7
2002,Salt Lake City,7
1992,Barcelona,5
2018,PyeongChang,5
2010,Vancouver,3
1976,Innsbruck,2
1968,Ciudad de México,1
1972,Sapporo,1
1984,Sarajevo,1
1988,Calgary,1
1998,Nagano,1
,Totals,418
[/table]