Other searches such as sex offender registry, credential verification, skills assessment, reference checks, credit reports and Patriot Act searches are becoming increasingly common.[21] Larger companies are more likely to outsource than their smaller counterparts – the average staff size of the companies who outsource is 3,313 compared to 2,162 for those who carry out in-house checks.[22] Financial service firms had the highest proportion of respondents who outsource the service, with over a quarter (26%) doing so, compared to an overall average of 16% who outsource vetting to a third party provider.[23] The construction and property industry showed the lowest level of outsourcing, with 89% of such firms in the sample carrying out checks in-house, making the overall average 16%.