Yoox Net-a-Porter has posted a boost in its full-year profits and sales bolstered by increased customer numbers and strong demand across all product lines.

The luxury etailer recorded a 9% rise in adjusted EBITDA to €169.2m (£151.3m) in the year to December 31 2017, driven by a 17% increase in net revenues to €2.1bn (£1.8bn).

The online retailer’s adjusted net income for the year declined 26% to €51.2m during the period, which the retailer attributed to non-cash amortisation and incentive scheme costs.

Yoox Net-a-Porter customers placed 9.5 million orders the during the period, up from 8.4 million the previous year, while its number of active customers rose 7% to 3.1 million.

However, the average order valued dipped from 2% to €328 (£293), which the retailer attributed to unfavourable exchange rates.

Net-A-Porter mobile sales comprised over half of total group sales during the period for the first time.

Chief executive officer Federico Marchetti said: “The YNAP teams’ hard work in 2017 built a business that is bigger and stronger than ever before.

“Our significant investments in technology and logistics ensure that the group will continue to thrive and remain the world’s leading online luxury destination.

“Looking ahead, we are excited about the growth opportunities in the Gulf region, the joint venture with Mohammed Alabbar really kicks in this year. Our on-the-ground operations will offer Middle Eastern customers and unbeatable online luxury experience.”