What are some major milestones that Sensex has seen in its 40-year journey?

Introduced at 549 points on January 2, 1986, Sensex will soon turn 40 and is currently trading at around 85,000. It crossed 1,000 in 1990, 10,000 in 2006, 50,000 in 2021 and 85,000 in 2024. Sensex's best-performing years were 1988, 1991, 1999, 2003 and 2009, with 1995, 1998, 2000, 2008 and 2011 being weakest ones.