Year	Number of Firms
1992-01-01	132
1997-01-01	151
2002-01-01	208
2003-01-01	210
2004-01-01	197
2005-01-01	185
2006-01-01	217
2007-01-01	220
2008-01-01	251
2009-01-01	256
2010-01-01	249
2011-01-01	274
2012-01-01	264
2013-01-01	238
2014-01-01	257
2015-01-01	258
2016-01-01	313