Table:
|  | December 31, |  |
| --- | --- | --- |
|  | 2018 | 2019 |
| Personnel-related items | 32,636 | 45,318 |
| Deferred revenue | 28,255 | 32,146 |
| Financing related items | – | 3,912 |
| Current portion of lease liabilities | – | 7,002 |
| Advanced payments from customers | 25,382 | 47,601 |
| Supplier related items | 1,828 | 2,175 |
| Marketing related items | 1,049 | 1,365 |
| R&D projects | 1,209 | 1,109 |
| Other | 8,634 | 9,215 |
| Total accrued expenses and other payables | 98,993 | 149,843 |
Paragraphs:
NOTE 15. ACCRUED EXPENSES AND OTHER PAYABLES
Accrued expenses and other payables consist of the following:
Personnel-related items comprise accrued management bonuses, accrued vacation days, accrued wage tax, social securities and pension premiums. Deferred revenue consists of the revenue relating to the undelivered elements of the arrangements, see Note 21 for more information. This part of revenue is deferred at their relative selling prices until delivery of these elements. Other includes accruals for VAT, other taxes and invoices to be received for goods and services.
Question:
What is the change in Personnel-related items from 2018 to 2019?