From Freshalloy:
1998 2178
1997 3655
1996 7334
1995 25114
1994 1167
1993 21471
1992 27033
1991 34534
1990 60582
1989 68118
Convertibles
1992 2102
1993 3892
1994 1167
The convertible numbers are included in the totals. I'm not sure if this is just the US, or the US and Canada (It definitely doesn't include Japan, Europe, etc).
~5800 kouki S14 240SX's built <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/thumbs-up.gif" border="0" valign="absmiddle" alt=':thumbsup:'>