Year	Percent
1950	10.18589
1955	9.19864
1960	7.95558
1965	8.75586
1970	10.79855
1975	10.88803
1980	10.60086
1985	10.07671
1990	10.2824
1995	11.32162
2000	13.29097
2005	13.24081
2010	9.62503
2015	6.91858
2020	6.4715
2025	7.35814
2030	7.70092
2035	6.85188
2040	5.65583
2045	4.78385
2050	4.58608
2055	4.8587
2060	5.1414
2065	5.08576
2070	4.76721
2075	4.47541
2080	4.42965
2085	4.6166
2090	4.84532
2095	4.91651
2100	4.8129