Today Twitter dispatched its first biannual Transparency Report -- revealing government requests for user info and content holdback along with DMCA takedown notices. The most notible here is the United States - it has the highest number of requests then the rest of the the world countries combined. It also has the most granted requests, at 75% of the requests for information granted.
The company claimed it was aroused to action by Google, which has been doing it for the last two years and recently added copyright takedowns to its own reports.
Most of the nations on this chart have made 10 requests or fewer.
Twitter also said that affected users are always notified unless the company is prohibited from doing so.
If you want to see more info/data about this, check out the source. Source: Twitter