For example, ubiquitous computer networks have solved many problems in transport of information and resource sharing. However, for each problem solved, networking has introduced at least a dozen in the areas of security and data integrity. There has never been a market glut of systems administrators. In fact, there are probably five jobs available for every existing sysadmin today. In fact, most experienced system administrators find they are doing the work of five people.
Demand has out-paced supply for at least the last six years.
Of course, this is mostly subjective information. There are at least two problems with clearly quantifying trends in the system administrator job market. The second problem is that market analysts don't usually track system administrator as a unique job title because of the first problem. Any surveys of system administrators are based on self-identification, not job title. As you would expect with increasing demand and shortage of qualified applicants, salaries for system administrators are attractive and competitive.