Year	Percent
1950	16.35369
1955	19.34906
1960	19.51068
1965	19.78252
1970	19.71186
1975	19.914
1980	20.17319
1985	19.14711
1990	17.24945
1995	16.03156
2000	15.27328
2005	15.51634
2010	16.30411
2015	16.4
2020	14.69192
2025	13.33874
2030	12.39783
2035	11.74263
2040	11.10004
2045	10.3997
2050	9.67671
2055	8.97344
2060	8.38701
2065	7.8993
2070	7.49779
2075	7.1345
2080	6.78732
2085	6.4872
2090	6.22802
2095	6.02583
2100	5.86107