1996
		may 1996	august 1996	november 1996
1997
	february 1997	may 1997	august 1997
1998
			august 1998
1999
	february 1999	may 1999	august 1999	november 1999
2000
	january 2000		june 2000	september 2000	december 2000
2001
		march 2001		september 2001
2002
			june 2002	september 2002	december 2002
2003
		march 2003	june 2003	september 2003	december 2003
2004
		march 2004	june 2004	september 2004
2005
		jan/mar 2005
2009
	february 2009	april 2009	july 2009	november 2009

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