I came upon indeed.com earlier wherein users can search for thousands of jobs and played around with its trends graph feature in which you can find the number of jobs posted.
I queried SEO and had this result:
As you can see on the graph, it shows that within a span of 2 years, the demand for seo increased by almost 275% which gives more stands for persons with search engine marketing skills.
Looks like I have to teach my 2yr old kid some more seo stuffs 
ako man pre turuan mo