Base 2011=100 started from January 2012. Producer Price Index, Year-on-Year and Month-on-Month Growth Rates for Manufacturing Sector. For base year 2007=100, please contact our helpdesk. Base 2011=100 started in January 2013. Base year 2007=100 starting from January 2009 to December 2012. The spike on 22 September 2009 was confirmed by PSE that it was due to the huge difference between large buy and small sell. The spike on 6 October 2009 was also confirm that it was due to the huge difference large sell large sell and small buy. The source stopped reporting private debt securities and others in July 2011.