WWE Smackdown averaged a 1.89 cable rating in 2012. This is down from the 1.95 cable rating the show averaged in 2011.
2011 marked the first official year for Smackdown on cable after spending over ten years on broadcast television on UPN, The CW and MyNetworkTV.
Below are Smackdown rating averages since 2000 courtesy of Gerweck.net.
2000: 4.73 * UPN (broadcast TV)
2001: 4.03 * UPN (broadcast TV)
2002: 3.52 * UPN (broadcast TV)
2003: 3.30 * UPN (broadcast TV)
2004: 3.18 * UPN (broadcast TV)
2005: 3.04 * UPN (broadcast TV)
2006: 2.46 * Show moves to The CW on 9/22
2007: 2.64 * The CW (broadcast TV)
2008: 2.33 * Show moves to MyNetworkTV on 10/3
2009: 1.94 * MyNetwork TV (broadcast TV)
2010: 1.81 * Show moves to cable on Syfy on 10/1
2011: 1.95
2012: 1.89