The U.S. National Park Service (NPS) may be set for another record year in terms of visitors. Total visits to the 370 national parks, recreation sites, monuments and the other destinations managed by the NPS grew by 5.62 percent in September to 29.8 million. For the first nine months of the year the number of visitors grew by 3.62 percent to 247.0 million, a figure that puts the organization in line to beat last year's record numbers. In 2014 national park visitation surged by 7.0 percent to 292.8 million after plummeting to an eight-year low in the previous year. Tent overnight stays are expected to grow by 10.68 percent over last year. The number of tent campers at NPS-managed sites declined by nearly 33,000 to 314,677 in September but visits through the first nine months of year reached 3.18 million, namely 307,000 more than the same period in 2014. The NPS will celebrate its 100th anniversary in 2016.