| | | | | | | | | | | | | | | | | | | | 2.1 | 2 | | | | | | | | | | 2009 | | | 2018 | | | | | | | 2020 | 5 | | | | | | | | | | | 6 | 50 | | | | | | | | | | | | | | | |