Year	Number
1997	103902240.6459496
1998	105590705.72996722
1999	115387853.25338033
2000	126523625.56775177
2001	120107914.45100342
2002	116180035.96668965
2003	111527590.85926193
2004	118880525.37815797
2005	131897897.91163974
2006	142195981.62312874
2007	154147831.6701276
2008	161440288.618398
2009	147862320.8577748
2010	159956286.40653843
2011	173796366.8036845
2012	187912954.9795171
2013	207108018.70105824
2014	178269882.99099627
2015	180141229.27877167
2016	181773707.0443537
2017	204344687.0537112
2018	218948144.64517212
2019	230131574.3204511