Annuals published by DC and particularly Marvel became fewer and far between by the late 1990s, mainly due to the near-collapse of the comic book industry in the wake of the speculator boom; annuals were seen as an unnecessary risk in a climate where many monthly publications were in danger of cancellation for lack of sales (especially at Marvel, which filed for bankruptcy at this time). When the industry began to recover from the "bust", annuals began re-appearing on occasion, but by no means as regularly as before the "bust", when numbered series of annuals had reached the teens or 20s, indicating over a decade of regular publication.