The IAC implementation rates page provides a breakdown of rates based on the following criteria.
RESET
Average Implementation Rate for All Matching Recommendations: 58.1%


Total Imped Imp Rate
1981 - - -
1982 - - -
1983 6 - -
1984 36 16 44.4%
1985 56 36 64.3%
1986 200 137 68.5%
1987 158 100 63.3%
1988 76 47 61.8%
1989 104 63 60.6%
1990 176 113 64.2%
1991 294 184 62.6%
1992 300 125 41.7%
1993 276 158 57.2%
1994 299 147 49.2%
1995 226 150 66.4%
1996 263 184 70.0%
1997 301 203 67.4%
1998 289 157 57.7%
1999 186 87 46.8%
2000 215 64 30.6%
2001 - - -
2002 13 4 30.8%
2003 47 18 38.3%
2004 57 44 77.2%
2005 32 10 50.0%
2006 62 30 56.6%
2007 69 35 50.7%
2008 68 38 61.3%
2009 79 48 66.7%
2010 123 77 62.6%
2011 91 52 66.7%
2012 172 100 59.9%
2013 201 121 60.2%
2014 150 78 53.4%
2015 146 60 50.0%
2016 98 50 51.0%
2017 161 118 75.2%
2018 39 22 81.5%
2019 36 - -
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