From October 2013 to November 2014, the two scientists were variously jailed, locked down in a halfway house, and kept in round-the-clock home detention.
About 310 administrative detainees are in Israeli jails, down from more than 800 in January 2008.
This year, Iranian authorities were holding 30 journalists in jail, down from 35 in 2013.
The foundation, based in San Francisco, said it believed that about 30 people remained in jail, down from the 50 to 60 prisoners it had previously reported.
The bill would equate smoking marijuana in public to toting an open can of beer; a misdemeanor with a maximum penalty of $500 and up to six months in jail, down from a potential $1,000 fine and one-year jail sentence.
US President Barack Obama has said he wants to close the jail down before he leaves office in 2017.
As with other misdemeanors, the new maximum sentence will be one year in jail, down from a maximum of three years.
Had Birkenfeld revealed what he knew about Olenicoff in June 2007, "Mr. Olenicoff would be in jail," Downing told the court.
The driver of a stolen lorry and his three passengers have been jailed for running down and killing a woman.
Protesters are gunned down, journalists jailed, and minorities harassed.
