| Year | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 |
| No. | 32 | 38 | 38 | 28 | 16 | 26 | 44 | 42 |
| Year | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| No. | 61 | 40 | 47 | 51 | 49 | 49 | 63 | 52 |
| Year | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | |
| No. | 63 | 86 | 92 | 88 | 118 | 146 | 190 |
Footnote
Figures from 1996 to 2004 are collected from Home Affairs Bureau.
Since the Access of Information Unit was only set up in 1995, no information for years before 1995 is available. Figures since 2005 are collected from Constitutional and Mainland Affairs Bureau.
Since the Access of Information Unit was only set up in 1995, no information for years before 1995 is available. Figures since 2005 are collected from Constitutional and Mainland Affairs Bureau.
