What adult fiction title was on the New York Times best list for longest time during 2000?

The adult fiction title that was on the New York Times Best Seller List for the longest time during 2000 was "The Da Vinci Code" by Dan Brown.

It held the #1 spot for 45 consecutive weeks starting in March 2003 and remained on the list for a total of 130 weeks (almost 2.5 years). This was a record at the time for both length of time at #1 and total weeks on the list for an adult fiction book.