On October 1 it will be 27 years since Nicholas died and became a donor. The effect on organ donations in Italy was spectacular. Even in the fourth quarter of 1994, just weeks after he was killed, donation rates went up 20 percent. In the next ten years they tripled, a rate of increase no other country has even come close to.
(Light green is living donations of kidneys, orange is living donations of a portion of livers.)
The full report (in Italian) is at https://trapianti.sanita.it/statistiche/attivita/2020_D_ATTIVITA_ORGANI_DX-TX.pdf