Year	Number of Firms
1992-01-01	51
1997-01-01	84
2002-01-01	79
2003-01-01	79
2004-01-01	84
2005-01-01	87
2006-01-01	94
2007-01-01	134
2008-01-01	138
2009-01-01	139
2010-01-01	138
2011-01-01	148
2012-01-01	142
2013-01-01	187
2014-01-01	174
2015-01-01	156
2016-01-01	170