The IAC implementation rates page provides a breakdown of rates based on the following criteria.
RESET
Average Implementation Rate for All Matching Recommendations: 49.6%


Total Imped Imp Rate
1981 80 33 41.3%
1982 1,152 317 27.5%
1983 1,150 352 30.6%
1984 1,746 1,050 60.1%
1985 2,377 1,400 58.9%
1986 1,998 1,254 62.8%
1987 2,175 1,404 64.6%
1988 2,629 1,581 60.1%
1989 2,380 1,402 58.9%
1990 2,417 1,395 57.7%
1991 3,091 1,766 57.1%
1992 3,777 1,828 48.8%
1993 4,130 2,052 51.4%
1994 5,474 2,585 48.9%
1995 6,055 3,056 52.5%
1996 6,403 3,321 53.2%
1997 5,996 2,731 49.5%
1998 5,872 2,695 48.4%
1999 5,520 2,215 43.0%
2000 5,333 2,100 42.6%
2001 4,640 1,938 44.3%
2002 4,708 2,061 45.6%
2003 5,105 2,142 43.8%
2004 5,394 2,589 51.2%
2005 4,533 2,075 50.1%
2006 4,204 1,918 52.2%
2007 3,260 1,537 50.0%
2008 3,302 1,483 48.8%
2009 2,666 1,236 48.4%
2010 3,304 1,467 49.2%
2011 3,242 1,337 46.4%
2012 4,002 1,687 45.9%
2013 4,060 1,949 48.8%
2014 3,686 1,675 47.1%
2015 4,219 1,838 46.4%
2016 3,733 1,579 48.4%
2017 3,186 203 53.1%
2018 - - -
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