These will come in handy! :)
8-digits--
19xxxxxx series - current
18xxxxxx series - 2013
17xxxxxx series - 2012 to 2013
16xxxxxx series - 2012
15xxxxxx series - 2011 to 2012
14xxxxxx series - 2011
13xxxxxx series – 2009 to 2010
12xxxxxx series – 2008 to 2009
11xxxxxx series - 2006 to 2008
10xxxxxx series - 2005 to 2006
7-digits--
9xxxxxx series - 2004 to 2005
8xxxxxx series - 2003 to 2004
7xxxxxx series - 2002 to 2003
6xxxxxx series - 2000 to 2002
5xxxxxx series - 1997 to 1999
4xxxxxx series - 1995 to 1997
3xxxxxx series - 1994 to 1995
2xxxxxx series - 1991 to 1994
1xxxxxx series - 1989 to 1991
0xxxxxx series - 1986 to 1988
Early 0xxxxxx series hologram stickers (1xxxxx to 2xxxxx) did not include the '0' on the stickers; thus, they contain a 6 digit serial number. But the authenticity cards include the '0' in front of the serial number, making it 7-digit.