Sheng nu cites studies that show that women are now breaking the tradition of "mandatory marriage" to have fewer children or marry later on in life. Other typologically similar terms that are still used in the modern lexicon of other countries and cultures show the concept has existed in some cases as far back as the 16th century. The term spinster was used to describe unmarried or single women of a marriageable age. It wasn't until 2004 when the Civil Partnership Act replaced the word spinster with "single" in the relationship history section of marriage certificates in the UK. Subsequently, at the
Priority Sector Lending Certificates versus a negative externality (environmental pollution). The targets in the case of Priority Sector Lending Certificates are a floor and not a cap. Tradable Priority Sector Lending Certificates was first proposed by A.M. Godbole in his article "How to lend more to the poor" (Mint, 28 March 2007). A.M. Godbole had called tradable Priority Sector Lending Certificates as 'social credits'. On 7 April 2008 (in a draft report) and on 12 September 2008 (in a final report) the High-Level Committee on Financial Sector Reforms recommended the introduction of Priority Sector Lending Certificates. On 7 April 2016 the portal for trading