Toy Story timeline

The timeline of the Toy Story film franchise:
 * 1) Toy Story: 1995 – The same year the film was released. In Toy Story 2, Tour Guide Barbie refers to the release of the Buzz Lightyear action figures as being "back in 1995". Buzz was a brand new toy in the first film, thus it must take place in 1995.
 * 2) Toy Story 2: 1999 – The same year the film was released. Andy seems to be a bit older than he was in the first movie.
 * 3) Toy Story 3: 2006 – It was Andy's sixth birthday in Toy Story. He was mentioned as being 17 in Toy Story 3.
 * 4) Toy Story 4: 2008 – Bonnie is only slightly older than she was in Toy Story 3. A scene from 9 years ago seems to take place shortly after Toy Story 2, which would be 1999.