Archives
2012
4 waves in this year.
2011
12 waves in this year.
2010
19 waves in this year.
2009
32 waves in this year.
2008
29 waves in this year.
2007
28 waves in this year.
2006
114 waves in this year.
2005
183 waves in this year.
2004
176 waves in this year.
2003
167 waves in this year.
2002
222 waves in this year.
