Say goodbye to Hollywood, as Billy Joel sang in 1976. Now, in the midst of a deepening housing crisis, thousands of people, all around the Golden State, are following that advice.

Over a million more people moved out of California from 2006 to 2016 than moved in, according to a new report, due mainly to the state’s infamously high housing costs, which hit lower-income people hardest.

Also see:How Las Vegas became the most popular destination for emigrants from California

“A strong economy can also be dysfunctional,” noted the report, a project of Next 10 and Beacon Economics. Housing costs are much higher in California than in other states, yet wages for workers in the lower income brackets aren’t. And the state attracts more highly educated high-earners who can afford pricey homes.

There are many reasons for the housing crunch, but the lack of new construction may be the most significant. According to the report, between 2008 and 2017 an average of 24.7 new housing permits were filed for every 100 new residents in California. That’s well below the national average of 43.1 permits per 100 people.

If this trend persists, analysts, according to the researchers, have forecast the state will be about 3 million homes short by 2025.

What does it mean?

Read:So why aren’t there enough houses to buy?

California homeowners spend an average of 21.9% of their income on housing costs, the second highest such proportion in the country, while renters spend 32.8%, which is outpaced by just two states. The median rent statewide in 2016 was $1,375, which is 40.2% higher than the national average. And the median home price was — wait for it — more than double the national average.

One coping strategy: California residents are more likely to double up. Nearly 14% of renter households had more than one person per bedroom, the U.S.’s highest reading in this category.

But coping can also mean leaving.

In a separate analysis, Realtor.com found that so-called outbound searches of real-estate listings in California’s 16 top markets were more than double the rate of other areas — and growing.

And in those areas — counties including Santa Clara, San Mateo and Los Angeles — the growth in views of listings on Realtor.com was virtually unchanged compared with a year ago this spring, while views of listings in other U.S. areas were 15% higher.

(News Corp, owner of MarketWatch, also operates Realtor.com under license from the National Association of Realtors.)

Also read:America’s new great migration in search of lower property taxes

The Next 10 and Beacon Economics researchers used U.S. Census data to track migration patterns by demographic characteristics. More than 20% of the 1.1 million people who moved in the decade they tracked did so in 2006, at the height of the housing bubble, when prices were, as they write, “sky-high.”

As the housing market imploded and prices came back to earth, the out-of-state migration slowed. But as prices recovered “outmigration” has not only picked up steam but accelerated.

Those migration patterns are shaped by socioeconomics. Most people leaving the state earn less than $30,000 per year, even as those who can afford higher housing costs are still arriving. As the report noted, California was also a net importer of highly skilled professionals from the information, professional and technical services industries, as well as in arts and entertainment. On the other hand, California saw the largest exodus of workers in accommodation, construction, manufacturing and retail industries.

(In a note about what this statewide trend might mean for the national economy, the report also calls the housing crunch “most dire” in agricultural areas, particularly the Central Valley and Imperial County.)

And where those refugees head may say a lot about why they’re going. The top five destinations for California migrants between 2014 and 2016 were the relatively nearby, but generally less costly, states of Texas, Arizona, Nevada, Oregon and Washington.

Median statewide home prices California $549,000 Texas $295,000 Arizona $339,000 Nevada $344,900 Oregon $420,000 Washington $420,000 (As of 4/1/2018, per Realtor.com.)

It’s worth noting that many housing analysts and economists believe that the 2017 tax-law changes could push residents from higher-priced properties in high-tax states ike California. But that isn’t happening yet.

Read:Home prices won’t slow down, stumping the experts and shutting out buyers