Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Elector | Nationality | Cardinalatial order and title | Elevated | Elevator |
| --- | --- | --- | --- | --- |
| Pietro Corsini | Florentine | Cardinal-bishop of Porto e Santa Rufina | 1370, June 7 | Urban V |
| Jean du Cros | French | Cardinal-bishop of Palestrina | 1371, May 30 | Gregory XI |
| Guillaume d'Aigrefeuille, iuniore , O.S.B. | French | Cardinal-priest of S. Stefano al Monte Celio | 1367, May 12 | Urban V |
| Francesco Tebaldeschi | Roman | Cardinal-priest of S. Sabina | 1368, September 22 | Urban V |
| Bertrand Lagier , O.F.M. | French | Cardinal-priest of S. Cecilia | 1371, May 30 | Gregory XI |
| Robert de Genève | French | Cardinal-priest of Ss. XII Apostoli | 1371, May 30 | Gregory XI |
| Simone Borsano | Milanese | Cardinal-priest of Ss. Giovanni e Paolo | 1375, December 20 | Gregory XI |
| Hugues de Montelais, le jeune | French | Cardinal-priest of Ss. IV Coronati | 1375, December 20 | Gregory XI |
| Gui de Maillesec | French | Cardinal-priest of S. Croce in Gerusalemme | 1375, December 20 | Gregory XI |
| Pierre de Sortenac | French | Cardinal-priest of S. Lorenzo in Lucina | 1375, December 20 | Gregory XI |
| Gérard du Puy , O.S.B. | French | Cardinal-priest of S. Clemente | 1375, December 20 | Gregory XI |
| Giacomo Orsini | Roman | Cardinal-deacon of S. Giorgio in Velabro | 1371, May 30 | Gregory XI |
| Pierre Flandrin | French | Cardinal-deacon of S. Eustachio | 1371, May 30 | Gregory XI |
| Guillaume Noellet | French | Cardinal-deacon of S. Angelo in Pescheria | 1371, May 30 | Gregory XI |
| Pierre de Vergne | French | Cardinal-deacon of S. Maria in Via Lata | 1371, May 30 | Gregory XI |
| Pedro Martínez de Luna y Gotor | Aragonese | Cardinal-deacon of S. Maria in Cosmedin | 1375, December 20 | Gregory XI |
Question:
When was Cardinal-Deacon of S. Giorgio in Velabro elevated?
Answer:
1371, May 30