Year	Percent
1950	13.11323
1955	12.89389
1960	14.54672
1965	14.39606
1970	14.60265
1975	14.42416
1980	13.57347
1985	14.65065
1990	15.43162
1995	16.71225
2000	16.50734
2005	14.73572
2010	13.95722
2015	14.82193
2020	14.98706
2025	14.74674
2030	13.99851
2035	13.17909
2040	12.72058
2045	12.49912
2050	12.1965
2055	11.69831
2060	11.11349
2065	10.5838
2070	10.19223
2075	9.88448
2080	9.54675
2085	9.15518
2090	8.7229
2095	8.35971
2100	8.03872