Cryptocurrency exchange Kraken has said the cost of responding to law enforcement requests for user data is rising sharply year on year.

In a tweet on Tuesday, the firm posted an infographic teasing its new 2019 Transparency Report. Indicating it had received 710 information requests in total – 49 percent more than in 2018.

The country issuing most requests in 2019 was the U.S. with 432 (almost 61 percent of the total).

The U.K. was the second nation in terms of request volume, with 86 (12 percent).  With Germany (44) and Italy (20).

Further set out in the infographic, of 1,222 user accounts affected by requests, 62 percent had data returned to the issuing agency. 

Kraken co-founder and CEO Jesse Powell said. The cost of servicing such law enforcement requests in a “high-wage market”. (The firm is based in California) was more than $1 million in 2019.