Year	Number
1996	38.1909561157227
1998	34
2000	31.8407955169678
2002	27.8606967926025
2003	25.8706474304199
2004	25.9615383148193
2005	24.8803825378418
2006	15.3110046386719
2007	14.3540668487549
2008	12.9807691574097
2009	10.4265403747559
2010	11.8483409881592
2011	12.6760559082031
2012	14.5539903640747
2013	21.1267604827881
2014	14.4230766296387
2015	15.2380952835083
2016	29.5238094329834
2017	25.7142848968506
2018	27.1428565979004
2019	31.9047622680664
2020	31.9047622680664
2021	40.9523811340332
2022	26.8867931365967