Below is the list of defences per year (am including the upcoming Shingo vs ZSJ for this year)
1987: 4
1988: 10 (1 outside)
1989: 9
1990: 5
1991: 5
1992: 9
1993: 5
1994: 9
1995: 10
1996: 5
1997: 7
1998: 11 (2 outside)
1999: 7
2000: 6
2001: 6
2002: 9
2003: 9
2004: 12
2005: 6
2006: 6
2007: 8
2008: 8 (1 outside)
2009: 12
2010: 9
2011: 11
2012: 11
2013: 9
2014: 6
2015: 5
2016: 6
2017: 7
2018: 8
2019: 7
2020: 6
2021: 9
2022: 8
2023: 8
2024: 13 (1 outside)
by creepyluna-no1