This law was first created in 1970. The record of its establishment is cataloged in chapter 779 of that year’s edition of “Acts of Assembly,” the annual state publication listing all changes made to the Code of Virginia in that year. Unfortunately, the 1970 “Acts” aren’t available online. It has been modified 4 times. Those modifications are cataloged by “The Acts of Assembly,” a state publication, by year and chapter. Those modifications that can be read on the General Assembly’s website will be linked accordingly. Those modifications are as follows: in 1973, chapter 523; in 1982, chapter 427; in 1986, chapter 474; in 1990, chapter 832.