Chitwan, June 11 The Chitwan National Park’s endeavours  to increase the population of striped tigers seem to have paid off, with its latest camera-trap record showing a significant rise in tiger population. As per The Global Tiger Recovery Plan, which was endorsed in the St Petersburg Declaration on Tiger conservation in 2010, Nepal committed to double its tiger population by 2022, from 121 to more than 250. The 2013 census report showed that the population of tigers in the national part was 120, while the number of young tigers across the country was 198. Chief of CNP Ram Chandra Kandel confirmed the increment in the tiger population in the national park.  “The number of tigers must have increased by at least 10 to 20 per cent,” said Chief Kandel.