Year	Number of Firms
1992-01-01	18
1997-01-01	35
2002-01-01	76
2003-01-01	88
2004-01-01	107
2005-01-01	109
2006-01-01	110
2007-01-01	123
2008-01-01	146
2009-01-01	159
2010-01-01	159
2011-01-01	162
2012-01-01	173
2013-01-01	168
2014-01-01	159
2015-01-01	158
2016-01-01	177