Turkey's tourism revenue surged 30.1 percent year-on-year to reach $7.04 billion in the second quarter of 2018, Turkish Statistical Institute (TurkStat) announced Tuesday.

TurkStat said 84.7 percent of tourism income, excluding mobile phone roaming and marina service expenditures, came from foreign tourists, while 15.3 percent was obtained from Turkish citizens residing abroad.

Turkey welcomed more than 11 million tourists in the second quarter of this year, an increase of 24.9 percent from the same quarter in 2017.

The report showed 89 percent of visitors were foreigners with 9.85 million persons, 11 percent of them were Turkish citizens resident abroad with 1.21 million persons, TurkStat said.

According to TurkStat, the number of Turkish citizens traveling abroad in the second quarter fell by 4.4 percent over the same period and reached almost 2.2 million.

The number of foreigners visiting Turkey rose by 28.5 percent, year-on-year, in June, reaching 5.1 million persons, the Culture and Tourism Ministry revealed Tuesday.

Russians made up almost 22 percent of foreign visitors, followed by Germans at around 10 percent, and British citizens at nearly 7 percent.

Number of foreigners visiting Turkey during January to June period climbed by 28.92 percent, compared to the same period last year, the data showed.

The total number of Turkish citizens resident abroad visiting the country also went up by 21.64 percent during the first six months, year-on-year.

President Recep Tayyip Erdoğan has said Turkey expected 40 million tourists by end of 2018.

"We expect $32 billion tourism revenue, and we are proceeding quickly toward this target," Erdogan added.

Mehmet Ersoy, minister of culture and tourism, also said nearly 16 million foreigners visited Turkey in the first six-month period of the current year.

While Turkey hosted 36.8 million foreigners in 2014 and 36.3 million in 2015, the figure decreased sharply to 25.3 million in 2016 but rose again to 32.4 million last year, according to TurkStat.

Turkey targets 50 million tourists and $50 billion in income by 2023, according to private sector representatives and officials.

The next quarterly data of TurkStat on tourism statistics is due on Oct. 31.