Hiring in the oil and energy industry rose by 5.2% over the past year as the industry rebounded from its trough in mid-2016 and oil prices reached their highest level since December 2014, according to LinkedIn’s new Workforce Report.

Overall, hiring across all industries was up 4.5% in May when compared to the same month a year ago.

Houston, an epicenter of oil production in the US, also saw a reduction in its surplus of people with skills typically needed to fuel the oil and energy industry, according to the report. The surplus of people with skills such as petroleum engineering, energy and geology skills fell to 14,000 in February from 16,000 in February 2016.

Oil and energy hiring was the third-fastest growing industry in May. The first was the aerospace, automotive and transport industry, which posted a 7.5% increase in hiring over the year. Next came the finance and insurance industry with a 6.4% increase.

The LinkedIn Workforce Report is a monthly report on employment trends in the US workforce, highlighting workforce trends in the US and across 20 cities.