Year	Number of Firms
1992-01-01	72
1997-01-01	141
2002-01-01	181
2003-01-01	215
2004-01-01	215
2005-01-01	210
2006-01-01	197
2007-01-01	219
2008-01-01	223
2009-01-01	217
2010-01-01	260
2011-01-01	269
2012-01-01	240
2013-01-01	266
2014-01-01	276
2015-01-01	288
2016-01-01	289