I'm mostly an Email Marketer.

The Vendor Years
Year 1 (account manager): $40K + 8% bonus
Year 2 (account manager): $45K + 8% bonus
Year 3 (senior account manager): $55K + 6% bonus
Year 4 (senior account manager): $60K + 10% bonus
Year 5 (client relationship manager): $70K + 16% bonus

First client-side job
Year 6 (email marketing manager): $85K
Year 7 (email marketing manager): $85K

Laid off, second client-side job:
Year 8 (marketing manager): $80K + $10K freelance
Year 9 (marketing manager): $80K + $15K freelance

Laid off, third client-side job:
Year 10 (marketing director): $110K + $20K freelance so far

Having been laid off from a couple of jobs, the desire to freelance has been strong for me to build stability. No job is forever, and I was shocked the first time I was laid off that most of my co-workers had no savings. I don't love doing freelance work, but I do love having something to fall back on. I worked with enough clients in the first five years of my career that I've been able to get a fair amount of work by word of mouth, and I've done some consulting this year for an agency that has paid fairly well for the amount of work it requires. I took a pay cut at one point because I was desperate for a job, and I regret it heavily. Never again.