Year	Percent
1950	10.13986
1955	10.38912
1960	10.39343
1965	10.885
1970	10.33437
1975	10.46302
1980	11.70683
1985	11.06573
1990	11.5468
1995	7.70436
2000	10.32652
2005	10.58679
2010	10.45542
2015	12.39632
2020	11.18844
2025	11.49681
2030	11.42267
2035	10.94409
2040	10.80298
2045	10.61259
2050	10.26565
2055	9.81331
2060	9.34842
2065	8.90236
2070	8.5327
2075	8.18425
2080	7.85121
2085	7.49462
2090	7.14047
2095	6.83426
2100	6.55315