In the 21st century we do not know which year would be the year of release, and I do not have a suggestion of what you could use as a starting date. But it's obvious, from the scriptures, we're to lend to our brothers as we are able.
Now comes the hitch. God commands that we are not to charge our brethren a single penny in interest on a loan (Exodus 22:25; Deuteronomy 23:19). Again, however, if the loan is to someone outside the brotherhood, interest may be charged:
"Do not charge your brother interest, whether on money or food or anything else that may earn interest. You may charge a foreigner interest, but not a brother Israelite, so that the LORD your God may bless you in everything you put your hand to in the land you are entering to possess." (Deuteronomy 23:19-20, NIV).
"But that's all Old Testament," you say. Well, let's see what's in the new.
Jesus tells us to give to him that asks, and do not turn him away:
"Give to him who asks you, and from him who wants to borrow from you do not turn away." (Matthew 5:42, NKJV)
In the book of Luke Jesus makes it clear that we're not even to turn our enemies away in their need:
"Give to everyone who asks you, and if anyone takes what belongs to you, do not demand it back. . . .
"But love your enemies, do good to them, and lend to them without expecting to get anything back. Then your reward will be great, and you will be sons of the Most High, because he is kind to the ungrateful and wicked." (Luke 6:30, 35, NIV)
Other scriptures to study concerning your questions are Matthew 25:35-40; 2Corinthians 9:6-7 and James 1:27; 2:15-16.