Year	Number of Firms
1992-01-01	4
1997-01-01	49
2002-01-01	48
2003-01-01	71
2004-01-01	53
2005-01-01	77
2006-01-01	83
2007-01-01	96
2008-01-01	121
2009-01-01	148
2010-01-01	227
2011-01-01	222
2012-01-01	222
2013-01-01	233
2014-01-01	196
2015-01-01	181
2016-01-01	201