Year	Number of Firms
1992-01-01	94
1997-01-01	129
2002-01-01	146
2003-01-01	166
2004-01-01	170
2005-01-01	182
2006-01-01	187
2007-01-01	194
2008-01-01	200
2009-01-01	210
2010-01-01	244
2011-01-01	233
2012-01-01	248
2013-01-01	246
2014-01-01	250
2015-01-01	250
2016-01-01	243