Yearly occurrence of R scale

Year R5 R4 R3 R2 R1
1996 0 0 1 0 4
1997 0 0 3 3 18
1998 0 0 14 7 87
1999 0 0 4 17 153
2000 0 0 16 20 195
2001 1 1 19 31 279
2002 0 0 12 18 201
2003 1 2 17 16 144
2004 0 0 12 22 100
2005 0 1 17 13 90
2006 0 0 4 3 11
2007 0 0 0 2 8
2008 0 0 0 0 1
2009 0 0 0 0 0
2010 0 0 0 3 20