
The first of these blocks dates back to May 18th, 2011 and the last one occured on August 15th, 2015 (it had only 1 satoshi missing and was apparently mined using CoiniumServ). The majority of these blocks was mined between January 2012 and March 2013.
While the previous methods are effective, they do not really destroy bitcoins. You can still see them in the blockchain, it’s just that no one can spend them. However, there’s a way to effectively destroy bitcoins by removing them from the blockchain.