Year	Percent
1950	14.09462
1955	12.83944
1960	13.63104
1965	12.31617
1970	10.05801
1975	9.46281
1980	8.94559
1985	9.4026
1990	9.35599
1995	8.55296
2000	7.35952
2005	6.09063
2010	5.94984
2015	5.84181
2020	5.53169
2025	5.06885
2030	4.84398
2035	4.74499
2040	4.70871
2045	4.64089
2050	4.524
2055	4.41392
2060	4.34976
2065	4.3582
2070	4.39977
2075	4.43405
2080	4.44968
2085	4.45201
2090	4.45494
2095	4.48082
2100	4.51417