2019 Illinois Compiled Statutes 415 ILCS 110/2012 – Prices; confidential proprietary information

2009 415 ILCS 110/2012 – Prices; confidential proprietary information

2014 Illinois Compiled Statutes 415 ILCS 110/2012 – Prices; confidential proprietary information

2013 Illinois Compiled Statutes 415 ILCS 110/2012 – Prices; confidential proprietary information

2015 Illinois Compiled Statutes 415 ILCS 110/2012 – Prices; confidential proprietary information

2016 Illinois Compiled Statutes 415 ILCS 110/2012 – Prices; confidential proprietary information

2017 Illinois Compiled Statutes 415 ILCS 110/2012 – Prices; confidential proprietary information