Year	Number of Firms
1992-01-01	59
1997-01-01	117
2002-01-01	142
2003-01-01	136
2004-01-01	159
2005-01-01	179
2006-01-01	187
2007-01-01	209
2008-01-01	249
2009-01-01	221
2010-01-01	208
2011-01-01	240
2012-01-01	230
2013-01-01	245
2014-01-01	235
2015-01-01	243
2016-01-01	244