Source: The Ocean Conservancy Year 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 Rings Collected 35,090 34,722 34,492 28,017 26,294 23,394 19,509 14,500 19,997 15,141 14,004 15,857 14,919 20,987