Our regional airports are experiencing healthy growth. The number of passengers using Eindhoven Airport rose by 14%, from 3.0 million in 2013 to 3.4 million in 2013. The number of destinations from Eindhoven Airport increased from 45 to 53. Rotterdam The Hague Airport also saw a rise in passenger numbers: from 1.3 million to 1.6 million; the number of destinations remained stable at 40.
Alders Platform agreements on Mainport Schiphol's future expansion also affect the development of Eindhoven Airport and Lelystad Airport, as these airports will be accommodating part of our non-Mainport related air traffic.
In June, Eindhoven Airport commissioned the new terminal building expansion and completed the new airport hotel. Furthermore, both transavia.com and Ryanair established bases at Eindhoven Airport, with three and one aircraft, respectively.
In 2013 we started a study on the future development of Lelystad Airport in the context of Mainport Schiphol's further expansion. In order to ensure that future commercial air traffic can be accommodated, the runway will have to be lengthened, an air traffic control tower will have to be built and flight routes determined. An environmental impact study to this end was initiated 2013, and is expected to be completed in 2014. The business case will also be presented in 2014.
Rotterdam The Hague Airport is increasingly developing into a business-oriented airport offering connections to various European industrial centres.
Our international activities are mainly focused on strengthening the Mainport and the Schiphol Group enterprise. Our international activities allow us to share knowledge and gain experience with different business models, processes and circumstances. Our international participations represent an important contribution to Schiphol Group's results.
In 2013 Aéroports de Paris (ADP) achieved a major milestone by transporting more than 90 million passengers via the airports of Paris-Charles de Gaulle and Paris-Orly for the first time in its history. The Parisian airports have made investments in the further expansion of capacity and quality over the past few years. This has helped to further improve quality perception and commercial results, including revenues from the duty-free stores. Partly as a result of its international activities, ADP has shown robust growth in terms of traffic volumes and turnover. Schiphol has an 8% interest in ADP, which means that the latter's performance substantially contributes to Schiphol's own results.
The HubLink collaboration between Schiphol Group and ADP mainly centres around joint purchasing and innovation. Schiphol and the Parisian airports have entered into a joint contract for the purchase of signposting features in the landing area and escalators and moving walkways. As a part of our ongoing innovation efforts, we are developing joint pilot projects aimed at improving information services to passengers and upgrading our payment systems. We also apply each other's knowledge across the board and at many different levels. For example, together with ADP we formed a consortium for the bid for Rio de Janeiro international airport in which we closely cooperated with two Brazilian partners.
The expansion of Terminal 4 at John F. Kennedy International Airport in New York, conducted in collaboration with Delta Air Lines, has been completed. On 24 May 2013, nine new international gates and additional facilities for baggage, customs and border control were commissioned. The expansion had an immediate impact: in 2013, Terminal 4 saw passenger numbers rise by 36.1%. Preparations for the construction of new gates for domestic carriers also commenced in 2013.
Brisbane Airport, in which Schiphol Group holds an 18.7% stake, remains on track towards becoming an AirportCity and sustained last year's trend by welcoming more passengers in 2013 (+1.4%). This year, Brisbane Airport has started the preparatory activities for a new parallel runway. Dredging and reclamation work on the intended runway site can now commence. As in 2012, Brisbane Airport managed to achieve strong results in 2013, and the participation represents a substantial contribution to Schiphol Group's results.
Our collaboration with Incheon Airport centres around the exchange of knowledge on baggage systems, digital cargo flows and the preferences of Asian customers. Several employees took part in an exchange programme and spent some time working at the partner airport. Incheon Airport continues to develop strongly, with passenger numbers showing robust growth. Incheon has repeatedly been voted the world's best airport in recent years.