Year	Percent
1950	8.53682
1955	8.71007
1960	8.25469
1965	7.90858
1970	10.81829
1975	11.36768
1980	11.78387
1985	10.96999
1990	10.59696
1995	10.09739
2000	9.98262
2005	8.43325
2010	8.24572
2015	6.19573
2020	5.97532
2025	6.85117
2030	7.78288
2035	7.19252
2040	6.33905
2045	5.93526
2050	5.96215
2055	6.16732
2060	6.2594
2065	6.09443
2070	5.78256
2075	5.54307
2080	5.47416
2085	5.50268
2090	5.4954
2095	5.39389
2100	5.24474