One thing to keep in mind about physics and the job market is that physics is an academic subject. As such the job market for physicists is driven largely by the public/government support of academia in universities and national labs. Year-to-year this doesn't fluctuate a lot, especially when compared to commercial job markets that are more directly linked to economic demands. There are more professional branches of physics though. Geophysics for example has a job market that is linked with the oil industry. The medical physics job market is linked with healthcare demands