MIAMI — 2014 has been a year of milestone deliveries for Boeing. It celebrated its 1,500th 747 delivery, its 8,000th 737, and 20th anniversary of the 777 first flight.

Today, Boeing celebrated another milestone–it delivered the 500th Boeing 777-300ER to Emirates. The 777-300ER (“ER” for Extended Range) was designed to fly more efficiently and farther than the -300.

It can fly approximately 34% further than the -300 with a full load of cargo and passengers. The first 777-300ER was rolled out on November 21, 2002, and the first aircraft was delivered to Air France on April 29, 2004.

Since its first delivery, it has quickly become the best-selling 777 variant. In 2010 the -300ER surpassed the -200ER in orders in 2010, and it surpassed the number of -200ER deliveries in 2013.

Currently, more than 30 airlines operate 500 -300ERs around the world, and Boeing still has more than 200 orders to fill.

The milestone delivery comes almost two months and 20 years after the first Boeing 777 took to the skies.