Year	Percent
1950	11.60908
1955	13.1305
1960	13.16448
1965	13.83156
1970	13.11187
1975	12.66414
1980	11.6191
1985	11.5981
1990	11.19385
1995	9.81095
2000	8.96619
2005	8.53129
2010	8.82869
2015	8.81511
2020	8.05684
2025	7.46498
2030	6.93473
2035	6.65279
2040	6.58681
2045	6.49378
2050	6.21845
2055	5.86341
2060	5.57316
2065	5.42386
2070	5.3807
2075	5.36371
2080	5.26089
2085	5.09203
2090	4.93439
2095	4.86121
2100	4.8724