Year	Number
1996	22.8260860443115
1998	21.7391300201416
2000	17.3913040161133
2002	33.5135116577148
2003	26.4864864349365
2004	29.3532333374023
2005	31.8627452850342
2006	33.3333320617676
2007	28.6407775878906
2008	32.5242729187012
2009	35.8851661682129
2010	38.7559814453125
2011	33.1753540039063
2012	29.8578205108643
2013	29.8578205108643
2014	29.3269233703613
2015	28.0952377319336
2016	28.0952377319336
2017	30.4761905670166
2018	32.3809509277344
2019	30.4761905670166
2020	22.380952835083
2021	24.761905670166
2022	26.4150943756104