ALSR, thank you for the link. I was able to easily download the full SOI dataset.
Here are a couple of charts of the 90-Day moving average SOI, one going all the way back to 1992, the other one showing about 5 years. I wanted to understand visually how current conditions compare to past years. 1991-1992, 1994-1995, 1997-1998, 2002-2003, 2006-2007, 2009-2010 were considered El-Nino years, if I'm not mistaken.