2017 | 2016 | ||||
Fair value of plan assets at January 1 | 5,030,407 | 3,851,943 | |||
Interest income | 37,500 | 47,994 | |||
Return on plan assets excluding interest income | 332,759 | 23,835 | |||
Employer contributions | 236,074 | 220,306 | |||
Plan participants' contributions | 236,074 | 218,275 | |||
Transfer-out amounts | (440,950 | ) | (1,276,315 | ) | |
Transfer-in amounts of new employees | 622,205 | 1,953,079 | |||
Administration expense | (17,422 | ) | (8,710 | ) | |
Fair value of plan assets at December 31 | 6,036,647 | 5,030,407 | |||
December 31, 2017 | December 31, 2016 | ||||
Present value of funded defined benefit obligation | 7,999,617 | 7,122,841 | |||
Fair value of plan assets | (6,036,647 | ) | (5,030,407 | ) | |
Net defined benefit liability | 1,962,970 | 2,092,434 | |||
2017 | 2016 | ||||
Defined benefit obligation at January 1 | 7,122,841 | 5,427,776 | |||
Service costs | 348,172 | 319,173 | |||
Plan participants' contribution | 236,074 | 218,275 | |||
Interest cost | 50,494 | 62,916 | |||
Actuarial losses | 60,781 | 417,937 | |||
Transfer-out amounts | (440,950 | ) | (1,276,315 | ) | |
Transfer-in amounts of new employees | 622,205 | 1,953,079 | |||
Defined benefit obligation at December 31 | 7,999,617 | 7,122,841 | |||