Yahoo user Subscription

Need one pager Yahoo User Base and web traffic Subscription by various services it offers

fore the following year

1. – Before it was formed 1995
2. 1996 when it was formed
3. 2000 
4. 2001 
5. 2004
6. 2008
7. 2012
8. 2014 – Impact of tumblr
9. 2016
10. 2018
11. 2020
12. 2021

Please include referrance