Madeleine McCann's parents released a heartbreaking statement as they reiterated their "determination" to find their daughter "remains steadfast".
She went missing in Portugal in May 2007 but her parents Kate and Gerry McCann are still confident of finding her alive as they said goodbye to 2020, the Daily Record reports.
They said: "Goodbye 2020. What a year! One we don't want to remember but will find it hard to forget.
"There's no doubt that 2020 has been tough for most people, and often distressing, with so much loss, worry and isolation.
"Despite losing a parent each, we are aware we have been more fortunate than many, with our family unit at home and jobs to go to.
"The hope, energy and determination to find her and uncover the truth remain steadfast.
"We are very grateful for the continued support, especially throughout this 'rubbish' year and for all the Christmas wishes too. Thank you."
Madeleine vanished aged three during a family holiday to the resort of Praia da Luz on May 3, 2007.
The couple, from Rothley in Leicestershire, are determined to find their daughter still alive.
In 2020 German police named convicted paedophile as the prime suspect in Madeleine's disappearance. He was living near the Praia da Luz resort when she went missing.
German prosecutors said they have material evidence that she is dead, but Kate and Gerry say they are confident they will still find their daughter alive.
In November Brueckner was told he will remain behind bars until 2026 after losing his bid to overturn a rape conviction.
He was found guilty of the 2005 rape of a 72-year-old American woman in Portugal.
German prosecutors are still keen to question Brueckner, 43, about Madeleine's disappearance.
The McCanns ended their message by saying: "Our thoughts and prayers are with everyone who has suffered this year. Let's hope 2021 is a brighter, more positive one."