Year	Percent
1950	11.24881
1955	15.53987
1960	14.21607
1965	13.58799
1970	8.05094
1975	6.64948
1980	6.82435
1985	9.98515
1990	10.33742
1995	7.78613
2000	5.34395
2005	3.65137
2010	4.09912
2015	5.38338
2020	6.07678
2025	5.7575
2030	5.1438
2035	4.57903
2040	4.40787
2045	4.61657
2050	4.95178
2055	5.15443
2060	5.13982
2065	5.0065
2070	4.90108
2075	4.90806
2080	5.00283
2085	5.10324
2090	5.1294
2095	5.07452
2100	4.97189