- 2015: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
- 2014: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
- 2013: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
- 2012: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
- 2011: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
- 2010: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
- 2009: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
- 2008: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
- 2007: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
doi:10.3246/ib.1000