In Q1 of 2019 average downtime increased to 7.3 days, from 6.2 days in Q4 of 2018. The increase in downtime was driven by the increased activity of ransomware that is difficult to decrypt, such as Ryuk. The majority of the Hermes variants are also time-consuming to decrypt with relatively high data loss rates (10-20%) compared to other types of ransomware. The downtime costs become particularly acute for companies that lack cyber insurance and/or business interruption insurance.”]
Source: https://www.coveware.com/blog/2019/4/15/ransom-amounts-rise-90-in-q1-as-ryuk-ransomware-increases